86 results
Search Results
2. Applying fractional calculus to analyze final consumption and gross investment influence on GDP
- Author
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Michal Fečkan and A. Badík
- Subjects
Consumption (economics) ,regression model ,caputo derivative ,Investment (macroeconomics) ,QA273-280 ,Fractional calculus ,26d15 ,method of least squares ,QA1-939 ,Econometrics ,26a51 ,26a33 ,Probabilities. Mathematical statistics ,General Economics, Econometrics and Finance ,Mathematics - Abstract
This paper points out the possibility of suitable use of Caputo fractional derivative in regression model. Fitting historical data using a regression model seems to be useful in many fields, among other things, for the short-term prediction of further developments in the state variable. Therefore, it is important to fit the historical data as accurately as possible using the given variables. Using Caputo fractional derivative, this accuracy can be increased in the model described in this paper.
- Published
- 2021
3. New Estimations for Shannon and Zipf-Mandelbrot Entropies
- Author
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Zaid Mohammad Al-Sahwi, Muhammad Adil Khan, and Yu-Ming Chu
- Subjects
General Physics and Astronomy ,lcsh:Astrophysics ,Zipf–Mandelbrot entropy ,Mandelbrot set ,01 natural sciences ,Article ,Domain (mathematical analysis) ,lcsh:QB460-466 ,Entropy (information theory) ,0101 mathematics ,lcsh:Science ,Mathematics ,convex function ,Discrete mathematics ,Zipf's law ,010102 general mathematics ,Jensen inequality ,Shannon entropy ,Function (mathematics) ,lcsh:QC1-999 ,010101 applied mathematics ,26D15 ,lcsh:Q ,Convex function ,Jensen's inequality ,lcsh:Physics - Abstract
The main purpose of this paper is to find new estimations for the Shannon and Zipf–Mandelbrot entropies. We apply some refinements of the Jensen inequality to obtain different bounds for these entropies. Initially, we use a precise convex function in the refinement of the Jensen inequality and then tamper the weight and domain of the function to obtain general bounds for the Shannon entropy (SE). As particular cases of these general bounds, we derive some bounds for the Shannon entropy (SE) which are, in fact, the applications of some other well-known refinements of the Jensen inequality. Finally, we derive different estimations for the Zipf–Mandelbrot entropy (ZME) by using the new bounds of the Shannon entropy for the Zipf–Mandelbrot law (ZML). We also discuss particular cases and the bounds related to two different parametrics of the Zipf–Mandelbrot entropy. At the end of the paper we give some applications in linguistics.
- Published
- 2018
4. On bounds involving k-Appell’s hypergeometric functions
- Author
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Khalida Inayat Noor, Marcela V. Mihai, Muhammad Aslam Noor, and Muhammad Uzair Awan
- Subjects
convex functions ,Pure mathematics ,Appell series ,Mathematics::Classical Analysis and ODEs ,0211 other engineering and technologies ,33B15 ,02 engineering and technology ,01 natural sciences ,Barnes integral ,Hypergeometric identity ,k-fractional ,inequalities ,k-Appell’s hypergeometric functions ,Discrete Mathematics and Combinatorics ,0101 mathematics ,Mathematics ,Basic hypergeometric series ,021103 operations research ,Confluent hypergeometric function ,Hypergeometric function of a matrix argument ,lcsh:Mathematics ,Research ,Applied Mathematics ,010102 general mathematics ,lcsh:QA1-939 ,33C65 ,Generalized hypergeometric function ,Algebra ,26D15 ,harmonic convex functions ,Lauricella hypergeometric series ,26A51 ,Analysis - Abstract
In this paper, we derive a new extension of Hermite-Hadamard’s inequality via k-Riemann-Liouville fractional integrals. Two new k-fractional integral identities are also derived. Then, using these identities as an auxiliary result, we obtain some new k-fractional bounds which involve k-Appell’s hypergeometric functions. These bounds can be viewed as new k-fractional estimations of trapezoidal and mid-point type inequalities. These results are obtained for the functions which have the harmonic convexity property. We also discuss some special cases which can be deduced from the main results of the paper.
- Published
- 2017
5. Padé approximants for inverse trigonometric functions and their applications
- Author
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Shanhe Wu and Gabriel Bercu
- Subjects
MathematicsofComputing_NUMERICALANALYSIS ,Mathematics::Classical Analysis and ODEs ,33B10 ,01 natural sciences ,Proofs of trigonometric identities ,Padé approximant ,26D05 ,inequalities ,ComputingMethodologies_SYMBOLICANDALGEBRAICMANIPULATION ,41A21 ,Discrete Mathematics and Combinatorics ,Applied mathematics ,refinement ,Inverse trigonometric functions ,0101 mathematics ,Mathematics ,lcsh:Mathematics ,Research ,Applied Mathematics ,010102 general mathematics ,Mathematical analysis ,Trigonometric substitution ,Trigonometric integral ,lcsh:QA1-939 ,010101 applied mathematics ,26D15 ,Analysis ,inverse trigonometric functions - Abstract
The Padé approximation is a useful method for creating new inequalities and improving certain inequalities. In this paper we use the Padé approximant to give the refinements of some remarkable inequalities involving inverse trigonometric functions, it is shown that the new inequalities presented in this paper are more refined than that obtained in earlier papers.
- Published
- 2017
6. Generalized Fractal Jensen–Mercer and Hermite–Mercer type inequalities via h-convex functions involving Mittag–Leffler kernel
- Author
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Saad Ihsan Butt, Saba Yousaf, Adnan Aslam, Peng Xu, and Tariq Javed Zia
- Subjects
Pure mathematics ,Hermite polynomials ,Mathematics::Classical Analysis and ODEs ,General Engineering ,Function (mathematics) ,Type (model theory) ,Engineering (General). Civil engineering (General) ,Fractional calculus ,Fractal ,26D15 ,Kernel (statistics) ,26A51 ,Differentiable function ,TA1-2040 ,26A33 ,Convex function ,Mathematics - Abstract
In this paper, we present generalized Jensen-Mercer inequality for a generalized h-convex function on fractal sets. We proved Hermite-Hadamard-Mercer local fractional integral inequalities via integral operators pertaining Mittag-Leffler kernel. Also, we drive two new local fractional integral identities for differentiable functions. By employing these integral identities, we derive some new Hermite-Mercer type inequalities for generalized h-convex function in local fractional calculus settings. Finally, we give some examples to emphasize the applications of derived results. These results will be a significant addition to Jensen-type inequalities in the literature.
- Published
- 2022
7. On Holder-Brascamp-Lieb inequalities for torsion-free discrete Abelian groups
- Author
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Christ, Michael, Demmel, James, Knight, Nicholas, Scanlon, Thomas, and Yelick, Katherine
- Subjects
math.LO ,26D15 ,Mathematics - Classical Analysis and ODEs ,Mathematics::Classical Analysis and ODEs ,Classical Analysis and ODEs (math.CA) ,FOS: Mathematics ,26D15, 11U05 ,math.CA ,11U05 ,Mathematics - Logic ,Logic (math.LO) - Abstract
H\"older-Brascamp-Lieb inequalities provide upper bounds for a class of multilinear expressions, in terms of $L^p$ norms of the functions involved. They have been extensively studied for functions defined on Euclidean spaces. Bennett-Carbery-Christ-Tao have initiated the study of these inequalities for discrete Abelian groups and, in terms of suitable data, have characterized the set of all tuples of exponents for which such an inequality holds for specified data, as the convex polyhedron defined by a particular finite set of affine inequalities. In this paper we advance the theory of such inequalities for torsion-free discrete Abelian groups in three respects. The optimal constant in any such inequality is shown to equal $1$ whenever it is finite. An algorithm that computes the admissible polyhedron of exponents is developed. It is shown that nonetheless, existence of an algorithm that computes the full list of inequalities in the Bennett-Carbery-Christ-Tao description of the admissible polyhedron for all data, is equivalent to an affirmative solution of Hilbert's Tenth Problem over the rationals. That problem remains open. Applications to computer science will be explored in a forthcoming companion paper., Comment: arXiv admin note: substantial text overlap with arXiv:1308.0068
- Published
- 2015
- Full Text
- View/download PDF
8. Some new inequalities for generalized convex functions pertaining generalized fractional integral operators and their applications
- Author
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M. Toseef, A. Kashuri, Muhammad Ali, and Mujahid Abbas
- Subjects
convexity ,010102 general mathematics ,01 natural sciences ,QA273-280 ,010101 applied mathematics ,Algebra ,raina’s function ,26d15 ,inequalities ,error estimation ,26d07 ,QA1-939 ,26a51 ,0101 mathematics ,26a33 ,Convex function ,special means ,Probabilities. Mathematical statistics ,General Economics, Econometrics and Finance ,26d10 ,Mathematics - Abstract
In this paper, authors establish a new identity for a differentiable function using generic integral operators. By applying it, some new integral inequalities of trapezium, Ostrowski and Simpson type are obtained. Moreover, several special cases have been studied in detail. Finally, many useful applications have been found.
- Published
- 2021
9. The equivalent parameter conditions for constructing multiple integral half-discrete Hilbert-type inequalities with a class of nonhomogeneous kernels and their applications
- Author
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Qiang Chen, Yong Hong, and Bing He
- Subjects
Pure mathematics ,Class (set theory) ,nonhomogeneous kernel ,multiple integral half-discrete hilbert-type inequality ,General Mathematics ,Multiple integral ,010102 general mathematics ,Type (model theory) ,01 natural sciences ,010101 applied mathematics ,operator norm ,bounded operator ,26d15 ,QA1-939 ,equivalent parameter condition ,47a07 ,0101 mathematics ,best constant factor ,Mathematics - Abstract
In this paper, we establish equivalent parameter conditions for the validity of multiple integral half-discrete Hilbert-type inequalities with the nonhomogeneous kernel G ( n λ 1 ∥ x ∥ m , ρ λ 2 ) G\left({n}^{{\lambda }_{1}}\parallel x{\parallel }_{m,\rho }^{{\lambda }_{2}}\hspace{-0.16em}) ( λ 1 λ 2 > 0 {\lambda }_{1}{\lambda }_{2}\gt 0 ) and obtain best constant factors of the inequalities in specific cases. In addition, we also discuss their applications in operator theory.
- Published
- 2021
10. Refinements of quantum Hermite-Hadamard-type inequalities
- Author
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Sundas Khan, Muhammad Ali, Hüseyin Budak, Yu-Ming Chu, and [Belirlenecek]
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Pure mathematics ,Inequality ,General Mathematics ,media_common.quotation_subject ,Mathematics::Classical Analysis and ODEs ,Quantum calculus ,Type (model theory) ,quantum calculus ,01 natural sciences ,26d15 ,Hadamard transform ,Hermite–Hadamard inequality ,QA1-939 ,26a51 ,0101 mathematics ,Quantum ,26d10 ,Mathematics ,media_common ,convex function ,Hermite polynomials ,010102 general mathematics ,Convex ,010101 applied mathematics ,Integral-Inequalities ,Hermite-Hadamard inequality ,q-integral ,Convex function - Abstract
In this paper, we first obtain two new quantum Hermite-Hadamard-type inequalities for newly defined quantum integral. Then we establish several refinements of quantum Hermite-Hadamard inequalities. Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11971241] This work was supported by the Natural Science Foundation of China (Grant No. 11971241) . WOS:000684960600001 2-s2.0-85112658736
- Published
- 2021
11. Reconciliation of discrete and continuous versions of some dynamic inequalities synthesized on time scale calculus
- Author
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Muhammad Jibril Shahab Sahir
- Subjects
Inequality ,time scales ,General Mathematics ,media_common.quotation_subject ,010102 general mathematics ,010103 numerical & computational mathematics ,Time-scale calculus ,01 natural sciences ,26d15 ,schlömilch’s inequality ,bergström’s inequality ,QA1-939 ,Calculus ,[MATH]Mathematics [math] ,rogers-hölder’s inequality ,0101 mathematics ,radon’s inequality ,26d20 ,Mathematics ,34n05 ,media_common - Abstract
The aim of this paper is to synthesize discrete and continuous versions of some dynamic inequalities such as Radon’s Inequality, Bergström’s Inequality, Schlömilch’s Inequality and Rogers-Hölder’s Inequality on time scales in comprehensive form.
- Published
- 2020
12. Trapezoid type inequalities for generalized Riemann-Liouville fractional integrals of functions with bounded variation
- Author
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Silvestru Sever Dragomir
- Subjects
Pure mathematics ,General Mathematics ,010102 general mathematics ,Riemann liouville ,Type (model theory) ,01 natural sciences ,trapezoid type inequalities ,010101 applied mathematics ,26d15 ,riemann-liouville fractional integrals ,lipshitzian functions ,functions of bounded variation ,26d07 ,Bounded variation ,QA1-939 ,0101 mathematics ,26a33 ,26d10 ,Mathematics - Abstract
In this paper we establish some trapezoid type inequalities for the Riemann-Liouville fractional integrals of functions of bounded variation and of Hölder continuous functions. Applications for the g-mean of two numbers are provided as well. Some particular cases for Hadamard fractional integrals are also provided.
- Published
- 2020
13. Inequalities for Jensen-Sharma-Mittal and Jeffreys-Sharma-Mittal Type
- Author
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Paweł A, Kluza
- Subjects
convex function ,Sharma–Mittal f-divergence ,26D15 ,Csiszár f-divergence ,Jensen–Sharma–Mittal divergence ,15B51 ,94A17 ,Jeffreys–Sharma–Mittal divergence ,Article - Abstract
In this paper, we introduce new divergences called Jensen–Sharma–Mittal and Jeffreys–Sharma–Mittal in relation to convex functions. Some theorems, which give the lower and upper bounds for two new introduced divergences, are provided. The obtained results imply some new inequalities corresponding to known divergences. Some examples, which show that these are the generalizations of Rényi, Tsallis, and Kullback–Leibler types of divergences, are provided in order to show a few applications of new divergences.
- Published
- 2021
14. Monotonicity properties and inequalities related to generalized Grötzsch ring functions
- Author
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Jian-Hui He, Fei Wang, Feng Qi, and Li Yin
- Subjects
gaussian hypergeometric function ,generalized modular equation ,sharp inequality ,Ring (mathematics) ,Pure mathematics ,primary 33e05 ,General Mathematics ,010102 general mathematics ,secondary 26a48 ,Monotonic function ,01 natural sciences ,generalized hersch–pfluger distortion function ,010101 applied mathematics ,26d15 ,generalized grötzsch ring function ,QA1-939 ,0101 mathematics ,Mathematics - Abstract
In the paper, the authors present some monotonicity properties and some sharp inequalities for the generalized Grötzsch ring function and related elementary functions. Consequently, the authors obtain new bounds for solutions of the Ramanujan generalized modular equation.
- Published
- 2019
15. Refinements of Some Recent Inequalities for Certain Special Functions
- Author
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Mohamed Amine Ighachane and Mohamed Akkouchi
- Subjects
33B20 ,Inequality ,lcsh:Mathematics ,General Mathematics ,media_common.quotation_subject ,33B15 ,General Medicine ,exponential integral function ,lcsh:QA1-939 ,Hurwitz-Lerch zeta function ,26D15 ,Special functions ,26D07 ,Binet’s first formula ,Hölder’s inequalities ,Abramowitz function ,Mathematical economics ,incomplete Gamma function ,media_common ,Mathematics - Abstract
The aim of this paper is to give some refinements to several inequalities, recently etablished, by P.K. Bhandari and S.K. Bissu in [Inequalities via Hölder’s inequality, Scholars Journal of Research in Mathematics and Computer Science, 2 (2018), no. 2, 124–129] for the incomplete gamma function, Polygamma functions, Exponential integral function, Abramowitz function, Hurwitz-Lerch zeta function and for the normalizing constant of the generalized inverse Gaussian distribution and the Remainder of the Binet’s first formula for ln Γ(x).
- Published
- 2019
16. Majorization, 'useful' Csiszár divergence and 'useful' Zipf-Mandelbrot law
- Author
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Đilda Pečarić, Naveed Latif, and Josip Pečarić
- Subjects
green functions ,Zipf–Mandelbrot law ,convex functions ,General Mathematics ,010102 general mathematics ,majorization inequality ,94a17 ,94a15 ,01 natural sciences ,“useful” csiszár divergence ,010101 applied mathematics ,26d15 ,“Useful” Csiszár divergence ,“Useful” Zipf-Mandelbrot law ,Majorization inequality ,Convex functions ,Green functions ,Information theory ,QA1-939 ,26a51 ,“useful” zipf-mandelbrot law ,Statistical physics ,0101 mathematics ,Divergence (statistics) ,Majorization ,Mathematics ,information theory - Abstract
In this paper, we consider the definition of “useful” Csiszár divergence and “useful” Zipf-Mandelbrot law associated with the real utility distribution to give the results for majorizatioQn inequalities by using monotonic sequences. We obtain the equivalent statements between continuous convex functions and Green functions via majorization inequalities, “useful” Csiszár functional and “useful” Zipf-Mandelbrot law. By considering “useful” Csiszár divergence in the integral case, we give the results for integral majorization inequality. Towards the end, some applications are given.
- Published
- 2018
17. Local fractional integrals involving generalized strongly m-convex mappings
- Author
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George A. Anastassiou, Artion Kashuri, and Rozana Liko
- Subjects
Pure mathematics ,Generalization ,lcsh:T57-57.97 ,lcsh:Mathematics ,General Mathematics ,010102 general mathematics ,Regular polygon ,Absolute value (algebra) ,Primary 26A51 ,lcsh:QA1-939 ,01 natural sciences ,010101 applied mathematics ,Identity (mathematics) ,Alpha (programming language) ,26D15 ,26D07 ,lcsh:Applied mathematics. Quantitative methods ,Fractal set ,Differentiable function ,0101 mathematics ,Real line ,Secondary 26A33 ,26D10 ,Mathematics - Abstract
In this paper, we first obtain a generalized integral identity for twice local fractional differentiable mappings on fractal sets $${\mathbb {R}}^{\alpha }\, (0
- Published
- 2018
18. Generalizations of Steffensen’s inequality via the extension of Montgomery identity
- Author
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Anamarija Perušić Pribanić, Andrea Aglić Aljinović, and Josip Pečarić
- Subjects
Inequality ,grüss-type inequality ,General Mathematics ,media_common.quotation_subject ,010102 general mathematics ,ostrowski-type inequality ,01 natural sciences ,Genealogy ,n-convex functions ,010101 applied mathematics ,Extension (metaphysics) ,26d15 ,Steffensen's inequality, n-convex functions, Montgomery identity, Ostrowski-type inequality, Grüss-type inequality ,Identity (philosophy) ,steffensen’s inequality ,QA1-939 ,26a51 ,Steffensen's inequality, n-convex functions, Montgomery identity ,0101 mathematics ,Mathematics ,montgomery identity ,media_common - Abstract
In this paper, we obtained new generalizations of Steffensen’s inequality for n-convex functions by using extension of Montgomery identity via Taylor’s formula. Since 1-convex functions are nondecreasing functions, new inequalities generalize Stefensen’s inequality. Related Ostrowski type inequalities are also provided. Bounds for the reminders in new identities are given by using the Chebyshev and Grüss type inequalities.
- Published
- 2018
19. Refinements on the discrete Hermite–Hadamard inequality
- Author
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Ferhan M. Atıcı, Hatice Yaldiz, and Yaldız, Hatice
- Subjects
Inequality ,39A12 ,General Mathematics ,media_common.quotation_subject ,MathematicsofComputing_NUMERICALANALYSIS ,Mathematics::Classical Analysis and ODEs ,01 natural sciences ,Hermite–Hadamard inequality ,ComputingMethodologies_SYMBOLICANDALGEBRAICMANIPULATION ,0103 physical sciences ,Mathematics::Metric Geometry ,0101 mathematics ,39A70 ,010303 astronomy & astrophysics ,Mathematics ,media_common ,lcsh:T57-57.97 ,lcsh:Mathematics ,010102 general mathematics ,Time-scale calculus ,State (functional analysis) ,lcsh:QA1-939 ,Algebra ,26D15 ,lcsh:Applied mathematics. Quantitative methods ,26A33 ,26D10 - Abstract
WOS:000437470500002 In this paper, we use techniques and tools from time scale calculus to state and prove many refinements on the discrete Hermite-Hadamard inequality.
- Published
- 2017
20. Extensions and improvements of Sherman’s and related inequalities for n-convex functions
- Author
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Josip Pečarić and Slavica Ivelić Bradanović
- Subjects
green functions ,Kantorovich inequality ,sherman inequality ,n-convex ,General Mathematics ,Ky Fan inequality ,majorization inequality ,fink identity ,jensen inequality ,01 natural sciences ,Sherman inequality, Majorization inequality, Jensen inequality, n-convex, Green functions, Fink identity, Čebyčev functional, Means ,26d15 ,Calculus ,0101 mathematics ,Mathematics ,Karamata's inequality ,Discrete mathematics ,Young's inequality ,lcsh:Mathematics ,010102 general mathematics ,lcsh:QA1-939 ,010101 applied mathematics ,means ,čebyšev functional ,Convex function ,Jensen's inequality - Abstract
This paper gives extensions and improvements of Sherman’s inequality forn-convex functions obtained by using new identities which involve Green’s functions and Fink’s identity. Moreover, extensions and improvements of Majorization inequality as well as Jensen’s inequality are obtained as direct consequences. New inequalities between geometric, logarithmic and arithmetic means are also established.
- Published
- 2017
21. Some Hermite-Hadamard type integral inequalities for operator AG-preinvex functions
- Author
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Ali Taghavi, Vahid Darvish, and Haji Mohammad Nazari
- Subjects
0209 industrial biotechnology ,Pure mathematics ,General Mathematics ,Mathematics::Classical Analysis and ODEs ,log-convex function ,02 engineering and technology ,Shift operator ,01 natural sciences ,Fourier integral operator ,47b10 ,020901 industrial engineering & automation ,26d15 ,Hadamard transform ,operator ag-preinvex function ,QA1-939 ,positive linear operator ,0101 mathematics ,Mathematics ,Hermite polynomials ,hermite-hadamard inequality ,010102 general mathematics ,Mathematical analysis ,Singular integral ,Compact operator ,Integral transform ,15a60 ,47a63 ,Daniell integral ,47b05 - Abstract
In this paper, we introduce the concept of operator AG-preinvex functions and prove some Hermite-Hadamard type inequalities for these functions. As application, we obtain some unitarily invariant norm inequalities for operators.
- Published
- 2016
22. On Fejer Type Inequalities for Convex Mappings Utilizing Fractional Integrals of a Function with Respect to Another Function
- Author
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Hüseyin Budak
- Subjects
convex functions ,Pure mathematics ,Generalization ,Applied Mathematics ,generalized fractional integrals ,010102 general mathematics ,Mathematics::Classical Analysis and ODEs ,Regular polygon ,Function (mathematics) ,Type (model theory) ,01 natural sciences ,010101 applied mathematics ,Mathematics (miscellaneous) ,26D15 ,Hadamard transform ,26D07 ,0101 mathematics ,Hermite-Hadamard-Fejer inequalities ,26A33 ,Convex function ,26D10 ,Mathematics - Abstract
WOS: 000456286000001 In this work, we first establish Hermite-Hadamard-Fejer type inequalities for convex function involving fractional integrals with respect to another function which are generalization of some important fractional integrals such as the Riemann-Liouville fractional integrals and the Hadamard fractional integrals. Moreover, we obtain some trapezoid type inequalities for these kind of fractional integrals. The results given in this paper provide generalization of several inequalities obtained in earlier studies.
- Published
- 2019
23. An elementary proof for the decomposition theorem of Wright convex functions
- Author
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Zsolt Páles
- Subjects
De Bruijn sequence ,Discrete mathematics ,lcsh:Mathematics ,General Mathematics ,010102 general mathematics ,General Medicine ,lcsh:QA1-939 ,01 natural sciences ,010101 applied mathematics ,jensen convexity ,Wright ,26D15 ,Mathematics - Classical Analysis and ODEs ,Elementary proof ,decomposition theorem ,Classical Analysis and ODEs (math.CA) ,FOS: Mathematics ,wright convexity ,0101 mathematics ,Convex function ,Transfinite number ,Mathematics ,Decomposition theorem - Abstract
The main goal of this paper is to give a completely elementary proof for the decomposition theorem of Wright convex functions which was discovered by C. T. Ng in 1987. In the proof, we do not use transfinite tools, i.e., variants of Rodé’s theorem, or de Bruijn’s theorem related to functions with continuous differences.
- Published
- 2019
- Full Text
- View/download PDF
24. Jensen type inequalities and their applications via fractional integrals
- Author
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Ali Ebadian, Mohsen Jaddi, and Sadegh Abbaszadeh
- Subjects
Mathematics::Functional Analysis ,0209 industrial biotechnology ,Pure mathematics ,Inequality ,General Mathematics ,media_common.quotation_subject ,020206 networking & telecommunications ,02 engineering and technology ,Type (model theory) ,Mathematics::Logic ,020901 industrial engineering & automation ,Holder's inequality ,Minkowski's inequality ,26D15 ,Chebyshev's inequality ,Minkowski space ,0202 electrical engineering, electronic engineering, information engineering ,Jensen's inequality ,26A33 ,28A25 ,Riemann-Liouville fractional integrals ,Complex plane ,Mathematics ,media_common - Abstract
The present paper is devoted to the study of Jensen type inequalities for fractional integration on finite subintervals of the real axis. The complete form of Jensen's inequality and the generalized Jensen's inequality are investigated by using the Chebyshev inequality. As applications, some new integral inequalities, including Holder's and Minkowski's inequalities, are obtained by using Jensen's inequality via Riemann-Liouville fractional integrals.
- Published
- 2018
25. Refinement of the Jensen integral inequality
- Author
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Muhammad Adil Khan, Addisalem Abathun, and Silvestru Sever Dragomir
- Subjects
Kantorovich inequality ,convex functions ,Young's inequality ,General Mathematics ,010102 general mathematics ,94a17 ,01 natural sciences ,GeneralLiterature_MISCELLANEOUS ,010101 applied mathematics ,Linear inequality ,26d15 ,QA1-939 ,Calculus ,jensen’s inequality ,Log sum inequality ,Rearrangement inequality ,0101 mathematics ,Convex function ,Mathematical economics ,Jensen's inequality ,Mathematics ,f-divergences ,Karamata's inequality - Abstract
In this paper we give a refinement of Jensen’s integral inequality and its generalization for linear functionals. We also present some applications in Information Theory.
- Published
- 2016
26. Some notes about one inequality with power functions
- Author
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Ladislav Matejíčka
- Subjects
Power mean ,Inequality ,lcsh:Mathematics ,Research ,Applied Mathematics ,media_common.quotation_subject ,MathematicsofComputing_GENERAL ,lcsh:QA1-939 ,Inequalities with power functions ,26D15 ,Discrete Mathematics and Combinatorics ,Power function ,Mathematical economics ,Analysis ,Mathematics ,media_common - Abstract
In this paper, we prove one inequality with power functions. A simplified form of the inequality was published as the problem 12024-02 in the American Mathematical Monthly.
- Published
- 2018
27. Bellman-Steffensen type inequalities
- Author
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Josip Pečarić, Julije Jakšetić, and Ksenija Smoljak Kalamir
- Subjects
Pure mathematics ,Class (set theory) ,Inequality ,lcsh:Mathematics ,Applied Mathematics ,media_common.quotation_subject ,Research ,Steffensen’s inequality ,Bellman–Steffensen type inequality ,Measure theory ,Exponential convexity ,010102 general mathematics ,Type (model theory) ,lcsh:QA1-939 ,01 natural sciences ,Action (physics) ,26D15 ,Discrete Mathematics and Combinatorics ,0101 mathematics ,Convex function ,26D20 ,Analysis ,media_common ,Mathematics - Abstract
In this paper some Bellman–Steffensen type inequalities are generalized for positive measures. Using sublinearity of a class of convex functions and Jensen’s inequality, nonnormalized versions of Steffensen’s inequality are obtained. Further, linear functionals, from obtained Bellman–Steffensen type inequalities, are produced and their action on families of exponentially convex functions is studied.
- Published
- 2018
28. A matrix application on absolute weighted arithmetic mean summability factors of infinite series
- Author
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Şebnem Yıldız and Kırşehir Ahi Evran Üniversitesi, Fen-Edebiyat Fakültesi, Matematik Bölümü
- Subjects
Hölder's inequality ,Riesz mean ,Hölder inequality ,infite series ,40F05 ,infinite series ,01 natural sciences ,Normal matrix ,Combinatorics ,Matrix (mathematics) ,0103 physical sciences ,0101 mathematics ,010303 astronomy & astrophysics ,summability factors ,Mathematics ,40D15 ,40G99 ,absolute matrix summability ,High Energy Physics::Phenomenology ,010102 general mathematics ,Minkowski inequality ,Holder inequality ,26D15 ,46A45 ,High Energy Physics::Experiment ,Weighted arithmetic mean ,42A24 - Abstract
WOS: 000457190500005 In this present paper, we have generalized a main theorem dealing with vertical bar(N) over bar, p(n)vertical bar(k) summability of non- decreasing sequences to vertical bar A,p(n)vertical bar(k) summability method by using almost increasing sequences and taking normal matrices in place of weighted mean matrices
- Published
- 2018
29. Different types of quantum integral inequalities via
- Author
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Yao, Zhang, Ting-Song, Du, Hao, Wang, and Yan-Jun, Shen
- Subjects
\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$(\alpha, m)$\end{document}(α,m)-convex functions ,26D15 ,Research ,Quantum integral inequalities ,26A51 ,Hermite–Hadamard’s inequality ,34A08 ,Simpson’s inequality ,26D10 - Abstract
In this paper, based on \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$(\alpha,m)$\end{document}(α,m)-convexity, we establish different type inequalities via quantum integrals. These inequalities generalize some results given in the literature.
- Published
- 2018
30. Sherman’s and related inequalities with applications in information theory
- Author
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Naveed Latif, Ðilda Pečarić, Josip Pečarić, and S. Ivelić Bradanović
- Subjects
Zipf–Mandelbrot law ,Information theory ,Inequality ,Sherman theorem ,Majorization inequality ,Jensen inequality ,Green ,Entropy ,media_common.quotation_subject ,01 natural sciences ,Green function ,Discrete Mathematics and Combinatorics ,Entropy (information theory) ,0101 mathematics ,26D20 ,Mathematics ,Karamata's inequality ,media_common ,n-convex function ,Abel–Gontscharoff interpolating polynomial ,lcsh:Mathematics ,Research ,Applied Mathematics ,010102 general mathematics ,94A17 ,lcsh:QA1-939 ,010101 applied mathematics ,26D15 ,Probability distribution ,ϕ-divergence ,Convex function ,Mathematical economics ,Jensen's inequality ,Analysis ,26D99 - Abstract
In this paper we give extensions of Sherman’s inequality considering the class of convex functions of higher order. As particular cases, we get an extended weighted majorization inequality as well as Jensen’s inequality which have direct connection to information theory. We use the obtained results to derive new estimates for Shannon’s and Rényi’s entropy, information energy, and some well-known measures between probability distributions. Using the Zipf–Mandelbrot law, we introduce new functionals to derive some related results.
- Published
- 2018
31. New approximation inequalities for circular functions
- Author
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Ling Zhu and Marija Nenezic
- Subjects
Power series ,Pure mathematics ,Inequality ,media_common.quotation_subject ,Exponential approximation inequalities ,Monotonic function ,01 natural sciences ,33B10 ,26D05 ,Discrete Mathematics and Combinatorics ,Trigonometric functions ,0101 mathematics ,Bernoulli number ,Quotient ,Mathematics ,media_common ,lcsh:Mathematics ,Applied Mathematics ,Research ,010102 general mathematics ,lcsh:QA1-939 ,Exponential function ,010101 applied mathematics ,26D15 ,Mitrinovic–Adamovic inequality ,Analysis ,Circular functions ,Bernoulli numbers - Abstract
In this paper, we obtain some improved exponential approximation inequalities for the functions \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$(\sin x)/x$\end{document}(sinx)/x and \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\sec(x)$\end{document}sec(x), and we prove them by using the properties of Bernoulli numbers and new criteria for the monotonicity of quotient of two power series.
- Published
- 2018
32. Some new
- Author
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Nwaeze, Eze R., Kermausuor, Seth, and Tameru, Ana M.
- Subjects
Hermite–Hadamard inequality ,Strongly η-quasiconvex ,26D15 ,Research ,Riemann–Liouville fractional integrals ,26A51 ,41A55 ,26E60 - Abstract
A new class of quasiconvexity called strongly η-quasiconvex function was introduced in (Awan et al. in Filomat 31(18):5783–5790, 2017). In this paper, we obtain some new k-Riemann–Liouville fractional integral inequalities associated with this class of functions. For specific values of the associated parameters, we recover results due to Dragomir and Pearce (Bull. Aust. Math. Soc. 57:377–385, 1998), Ion (Ann. Univ. Craiova, Math. Sci. Ser. 34:82–87, 2007), and Alomari et al. (RGMIA Res. Rep. Collect. 12(Supplement):Article ID 14, 2009).
- Published
- 2018
33. Estimation type results related to Fejér inequality with applications
- Author
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M. Rostamian Delavar, Sever S Dragomir, and M. De la Sen
- Subjects
Inequality ,Random variable ,media_common.quotation_subject ,Type (model theory) ,01 natural sciences ,Convex function ,Discrete Mathematics and Combinatorics ,Applied mathematics ,0101 mathematics ,Mathematics ,media_common ,Estimation ,Mathematics::Functional Analysis ,Applied Mathematics ,lcsh:Mathematics ,Research ,010102 general mathematics ,lcsh:QA1-939 ,52A01 ,Connection (mathematics) ,010101 applied mathematics ,26D15 ,Fejér inequality ,26A51 ,Trapezoidal formula ,Analysis - Abstract
This paper deals with some new theorems and inequalities about a Fejér type integral inequality which estimate the difference between the right and middle part in Fejér inequality with new bounds. Also some applications to higher moments of random variables, an error estimate for trapezoidal formula, and some inequalities in connection with special means are given.
- Published
- 2017
34. Approximation for the gamma function via the tri-gamma function
- Author
-
Xiaocui Li and Xu You
- Subjects
lcsh:Mathematics ,Research ,Applied Mathematics ,Computation ,010102 general mathematics ,33B15 ,Function (mathematics) ,lcsh:QA1-939 ,01 natural sciences ,010101 applied mathematics ,gamma function ,26D15 ,inequalities ,Discrete Mathematics and Combinatorics ,Applied mathematics ,0101 mathematics ,41A25 ,Gamma function ,Asymptotic expansion ,approximation ,multiple-correction method ,Analysis ,Mathematics - Abstract
In this paper, we present a new sharp approximation for the gamma function via the tri-gamma function. This approximation is fast in comparison with the recently discovered asymptotic series. We also establish the inequalities related to this approximation. Finally, some numerical computations are provided for demonstrating the superiority of our approximation.
- Published
- 2017
35. Explicit bounds of unknown function of some new weakly singular retarded integral inequalities for discontinuous functions and their applications
- Author
-
Zizun Li and Wu-Sheng Wang
- Subjects
Differential equation ,Type (model theory) ,01 natural sciences ,Singular integral equation ,Singular solution ,Discrete Mathematics and Combinatorics ,Applied mathematics ,0101 mathematics ,singular integral equation ,26D20 ,Mathematics ,lcsh:Mathematics ,Research ,Applied Mathematics ,010102 general mathematics ,Mathematical analysis ,explicit bounds ,integral inequality for discontinuous function ,weakly singular ,Function (mathematics) ,Singular integral ,lcsh:QA1-939 ,retarded ,010101 applied mathematics ,26D15 ,45A99 ,26D10 ,Analysis - Abstract
The purpose of the present paper is to establish some new retarded weakly singular integral inequalities of Gronwall-Bellman type for discontinuous functions, which generalize some known weakly singular and impulsive integral inequalities. The inequalities given here can be used in the analysis of the qualitative properties of certain classes of singular differential equations and singular impulsive equations.
- Published
- 2017
36. An Elementary Approach to the Diophantine Equation $ax^m + by^n = z^r$ Using Center of Mass
- Author
-
Amir M. Rahimi
- Subjects
Fermat's Last Theorem ,Pure mathematics ,Conjecture ,Beal's Conjecture ,General Mathematics ,Diophantine equation ,$k$-Mass-System of $n$ points (positive integers) ,Type (model theory) ,Fixed point ,Upper and lower bounds ,11D41 ,26D15 ,center of mass ,Product (mathematics) ,Greatest common divisor ,70-08 ,Mathematics - Abstract
This paper takes an interesting approach to conceptualize some power sum inequalities and uses them to develop limits on possible solutions to some Diophantine equations. In this work, we introduce how to apply center of mass of a $k$-mass-system to discuss a class of Diophantine equations (with fixed positive coefficients) and a class of equations related to Fermat's Last Theorem. By a constructive method, we find a lower bound for all positive integers that are not the solution for these type of equations. Also, we find an upper bound for any possible integral solution for these type of equations. We write an alternative expression of Fermat's Last Theorem for positive integers in terms of the product of the centers of masses of the systems of two fixed points (positive integers) with different masses. Finally, by assuming the validity of Beal's conjecture, we find an upper bound for any common divisor of $x$, $y$, and $z$ in the expression $ax^m+by^n = z^r$ in terms of $a, b, m({\rm or} ~n), r$, and the center of mass of the $k$-mass-system of $x$ and $y$.
- Published
- 2017
37. On generalization of refinement of Jensen’s inequality using Fink’s identity and Abel-Gontscharoff Green function
- Author
-
Khuram Ali Khan, Josip Pečarić, and Tasadduq Niaz
- Subjects
Pure mathematics ,Generalization ,Monotonic function ,convex function ,Jensen’s inequality ,Fink’s identity ,Abel-Gontscharoff interpolating polynomial ,Green function for ‘two-point right focal’ problem ,010103 numerical & computational mathematics ,01 natural sciences ,Identity (mathematics) ,Linear form ,26D07 ,Discrete Mathematics and Combinatorics ,0101 mathematics ,26D20 ,Karamata's inequality ,Mathematics ,Research ,lcsh:Mathematics ,Applied Mathematics ,Function (mathematics) ,lcsh:QA1-939 ,010101 applied mathematics ,Algebra ,26D15 ,Convex function ,Jensen's inequality ,Analysis ,26D99 - Abstract
In this paper, we formulate new Abel-Gontscharoff type identities involving new Green functions for the ‘two-point right focal’ problem. We use Fink’s identity and a new Abel-Gontscharoff-type Green’s function for a ‘two-point right focal’ to generalize the refinement of Jensen’s inequality given in (Horváth and Pečarić in Math. Inequal. Appl. 14: 777-791, 2011) from convex function to higher order convex function. Also we formulate the monotonicity of the linear functional obtained from these identities using the recent theory of inequalities for n-convex function at a point. Further we give the bounds for the identities related to the generalization of the refinement of Jensen’s inequality using inequalities for the Cebyšev functional. Some results relating to the Grüss and Ostrowski-type inequalities are constructed.
- Published
- 2017
38. Inequalities of Hermite–Hadamard type for functions whose derivatives in absolute value are convex with applications
- Author
-
Muhammad Latif
- Subjects
Convex analysis ,Young's inequality ,Pure mathematics ,Hermite polynomials ,Convex functions ,Hölder inequality ,General Mathematics ,Mathematical analysis ,Linear matrix inequality ,Subderivative ,Primary 26A51 ,26D15 ,Hadamard transform ,QA1-939 ,Hermite–Hadamard’s inequality ,Power-mean inequality ,Special means ,Convex function ,Jensen's inequality ,Mathematics - Abstract
In this paper some new Hadamard-type inequalities for functions whose derivatives in absolute values are convex are established. Some applications to special means of real numbers are given. Finally, we also give some applications of our obtained results to get new error bounds for the sum of the midpoint and trapezoidal formulae.
- Published
- 2015
39. Conformable fractional Hermite-Hadamard inequalities via preinvex functions
- Author
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Khalida Inayat Noor, Marcela V. Mihai, Muhammad Uzair Awan, and Muhammad Aslam Noor
- Subjects
Pure mathematics ,Class (set theory) ,Hermite polynomials ,Property (philosophy) ,010102 general mathematics ,convex ,Regular polygon ,Hermite-Hadamard ,010103 numerical & computational mathematics ,Type (model theory) ,Conformable matrix ,01 natural sciences ,26D15 ,Hadamard transform ,fractional ,26A51 ,preinvex ,0101 mathematics ,26A33 ,conformable ,Mathematics - Abstract
The aim of this paper is to obtain some new refinements of Hermite-Hadamard type inequalities via conformable fractional integrals. The class of functions used for deriving the inequalities have the preinvexity property. We also discuss some special cases.
- Published
- 2017
40. Generalized geometrically convex functions and inequalities
- Author
-
Muhammad Aslam Noor, Farhat Safdar, and Khalida Inayat Noor
- Subjects
Pure mathematics ,0211 other engineering and technologies ,Convex set ,Proper convex function ,Hölder’s inequality ,02 engineering and technology ,Subderivative ,90C23 ,01 natural sciences ,Combinatorics ,Convex polytope ,Discrete Mathematics and Combinatorics ,Convex combination ,0101 mathematics ,Absolutely convex set ,Mathematics ,Convex analysis ,021103 operations research ,lcsh:Mathematics ,Applied Mathematics ,Research ,010102 general mathematics ,Hermite-Hadamard’s type inequalities ,lcsh:QA1-939 ,generalized convex functions ,26D15 ,Convex optimization ,generalized geometrically convex functions ,Analysis ,26D10 - Abstract
In this paper, we introduce and study a new class of generalized functions, called generalized geometrically convex functions. We establish several basic inequalities related to generalized geometrically convex functions. We also derive several new inequalities of the Hermite-Hadamard type for generalized geometrically convex functions. Several special cases are discussed, which can be deduced from our main results.
- Published
- 2017
41. Padé approximant related to inequalities involving the constant
- Author
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Chao-Ping, Chen and Hui-Jie, Zhang
- Subjects
weight coefficient ,Padé approximant ,26D15 ,Research ,Carleman’s inequality ,41A60 - Abstract
Based on the Padé approximation method, in this paper we determine the coefficients \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$a_{j}$\end{document}aj and \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$b_{j}$\end{document}bj (\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$1\leq j \leq k$\end{document}1≤j≤k) such that \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \frac{1}{e} \biggl( 1+\frac{1}{x} \biggr) ^{x}= \frac{x^{k}+a_{1}x^{k-1}+ \cdots +a_{k}}{x^{k}+b_{1}x^{k-1}+\cdots +b_{k}}+O \biggl( \frac{1}{x ^{2k+1}} \biggr) , \quad x\to \infty , $$\end{document}1e(1+1x)x=xk+a1xk−1+⋯+akxk+b1xk−1+⋯+bk+O(1x2k+1),x→∞, where \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$k\geq 1$\end{document}k≥1 is any given integer. Based on the obtained result, we establish new upper bounds for \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$( 1+1/x ) ^{x}$\end{document}(1+1/x)x. As an application, we give a generalized Carleman-type inequality.
- Published
- 2017
42. Next generalization of Cîrtoaje's inequality
- Author
-
Ladislav Matejíčka
- Subjects
Kantorovich inequality ,Hölder's inequality ,Pure mathematics ,Bernoulli's inequality ,Applied Mathematics ,lcsh:Mathematics ,Research ,010102 general mathematics ,Ky Fan inequality ,Multidimensional Chebyshev's inequality ,lcsh:QA1-939 ,01 natural sciences ,inequalities with power-exponential functions ,010101 applied mathematics ,Cîrtoaje’s inequality ,Linear inequality ,26D15 ,Discrete Mathematics and Combinatorics ,Log sum inequality ,Rearrangement inequality ,0101 mathematics ,Mathematical economics ,Analysis ,Mathematics - Abstract
In this paper, we classify sets of solutions of the next generalized Cîrtoaje’s inequality and its reverse, respectively.
- Published
- 2017
43. Generalized Hermite-Hadamard type inequalities involving fractional integral operators
- Author
-
Erhan Set, Muhammed Uzair Awan, Muhammed Aslam Noor, and Abdurrahman Gözpınar
- Subjects
Pure mathematics ,Hölder inequality ,Mathematics::Classical Analysis and ODEs ,01 natural sciences ,Fourier integral operator ,Identity (mathematics) ,fractional integral operator ,Hadamard transform ,Hermite–Hadamard inequality ,Discrete Mathematics and Combinatorics ,0101 mathematics ,Mathematics ,convex function ,Hermite polynomials ,33B20 ,Applied Mathematics ,lcsh:Mathematics ,Research ,010102 general mathematics ,Mathematical analysis ,lcsh:QA1-939 ,Fractional calculus ,010101 applied mathematics ,Hermite-Hadamard inequality ,26D15 ,Daniell integral ,Convex function ,26A33 ,Analysis ,26D10 - Abstract
In this article, a new general integral identity involving generalized fractional integral operators is established. With the help of this identity new Hermite-Hadamard type inequalities are obtained for functions whose absolute values of derivatives are convex. As a consequence, the main results of this paper generalize the existing Hermite-Hadamard type inequalities involving the Riemann-Liouville fractional integral.
- Published
- 2017
44. An extension of a multidimensional Hilbert-type inequality
- Author
-
Bicheng Yang and Jianhua Zhong
- Subjects
Kantorovich inequality ,norm ,Pure mathematics ,Ky Fan inequality ,01 natural sciences ,ComputingMethodologies_SYMBOLICANDALGEBRAICMANIPULATION ,Discrete Mathematics and Combinatorics ,Hilbert-type inequality ,Log sum inequality ,0101 mathematics ,Cauchy–Schwarz inequality ,47A05 ,Mathematics ,lcsh:Mathematics ,Applied Mathematics ,Research ,010102 general mathematics ,lcsh:QA1-939 ,Multidimensional Chebyshev's inequality ,010101 applied mathematics ,Algebra ,weight coefficient ,Linear inequality ,26D15 ,operator ,Bessel's inequality ,Rearrangement inequality ,equivalent form ,Analysis - Abstract
In this paper, by the use of weight coefficients, the transfer formula and the technique of real analysis, a new multidimensional Hilbert-type inequality with multi-parameters and a best possible constant factor is given, which is an extension of some published results. Moreover, the equivalent forms, the operator expressions and a few particular inequalities are considered.
- Published
- 2017
45. Anisotropic Picone identities and anisotropic Hardy inequalities
- Author
-
Tingfu Feng and Xuewei Cui
- Subjects
Sturmian comparison principle ,Inequality ,media_common.quotation_subject ,anisotropic elliptic equation ,01 natural sciences ,anisotropic Picone identity ,Discrete Mathematics and Combinatorics ,0101 mathematics ,Anisotropy ,media_common ,Mathematics ,Research ,lcsh:Mathematics ,Applied Mathematics ,010102 general mathematics ,Mathematical analysis ,anisotropic Hardy type inequality ,Picone identity ,Type inequality ,lcsh:QA1-939 ,010101 applied mathematics ,Elliptic curve ,26D15 ,Sturm–Picone comparison theorem ,Laplace operator ,26D10 ,Analysis - Abstract
In this paper, we derive an anisotropic Picone identity for the anisotropic Laplacian, which contains some known Picone identities. As applications, a Sturmian comparison principle to the anisotropic elliptic equation and an anisotropic Hardy type inequality are shown.
- Published
- 2017
46. Hardy-type inequalities for generalized fractional integral operators
- Author
-
Muhammad Samraiz, Živorad Tomovski, Josip Pečarić, and Sajid Iqbal
- Subjects
Mathematics::Complex Variables ,010102 general mathematics ,Mathematical analysis ,Mathematics::Classical Analysis and ODEs ,Regular polygon ,Microlocal analysis ,Hilfer fractional derivative ,Mittag Leffler function ,Fractional integral ,Function (mathematics) ,Operator theory ,01 natural sciences ,Fourier integral operator ,Fractional calculus ,010101 applied mathematics ,Mathematics::Probability ,26D15 ,Mittag-Leffer function ,Kernel (statistics) ,Applied mathematics ,0101 mathematics ,26A33 ,26D10 ,Geometry and topology ,Mathematics - Abstract
The aim of this research paper is to establish the Hardy-type inequalities for Hilfer fractional derivative and generalized fractional integral involving Mittag-Leffler function in its kernel using convex and increasing functions.
- Published
- 2017
47. An accurate approximation formula for gamma function
- Author
-
Jing-Feng Tian and Zhen-Hang Yang
- Subjects
Monotonicity ,Applied Mathematics ,lcsh:Mathematics ,Research ,010102 general mathematics ,33B15 ,lcsh:QA1-939 ,01 natural sciences ,010101 applied mathematics ,Combinatorics ,26A48 ,Convexity ,26D15 ,Mathematics - Classical Analysis and ODEs ,Gamma function ,Classical Analysis and ODEs (math.CA) ,FOS: Mathematics ,Discrete Mathematics and Combinatorics ,26A51 ,0101 mathematics ,Approximation ,33B15, 26D15 (Primary), 26A48, 26A51(Secondary) ,Analysis ,Mathematics - Abstract
In this paper, we present a very accurate approximation for gamma function: \begin{equation*} \Gamma \left( x+1\right) \thicksim \sqrt{2\pi x}\left( \dfrac{x}{e}\right) ^{x}\left( x\sinh \frac{1}{x}\right) ^{x/2}\exp \left( \frac{7}{324}\frac{1}{ x^{3}\left( 35x^{2}+33\right) }\right) =W_{2}\left( x\right) \end{equation*} as $x\rightarrow \infty $, and prove that the function $x\mapsto \ln \Gamma \left( x+1\right) -\ln W_{2}\left( x\right) $ is strictly decreasing and convex from $\left( 1,\infty \right) $ onto $\left( 0,\beta \right) $, where \begin{equation*} \beta =\frac{22\,025}{22\,032}-\ln \sqrt{2\pi \sinh 1}\approx 0.00002407. \end{equation*}, Comment: 9 pages
- Published
- 2017
- Full Text
- View/download PDF
48. Integral inequalities under beta function and preinvex type functions
- Author
-
Izhar Ahmad
- Subjects
Pure mathematics ,Multidisciplinary ,Holder’s inequality ,Research ,Euler beta function ,010102 general mathematics ,33B15 ,Function (mathematics) ,Type (model theory) ,01 natural sciences ,26B25 ,010101 applied mathematics ,symbols.namesake ,26D15 ,P-preinvex function ,symbols ,Integral inequality ,0101 mathematics ,Beta function ,26D10 ,Mathematics - Abstract
In the present paper, the notion of P-preinvex function is introduced and new integral inequalities for this kind of function along with beta function are establised. The work extends the results appeared in the literature.
- Published
- 2016
49. Optimal functional inequalities for fractional operators on the sphere and applications
- Author
-
Jean Dolbeault, An Zhang, CEntre de REcherches en MAthématiques de la DEcision (CEREMADE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Dauphine-PSL, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), ANR-12-BS01-0019,STAB,Stabilité du comportement asymptotique d'EDP, de processus stochastiques et de leurs discrétisations.(2012), ANR-13-BS01-0004,KIBORD,Modèles cinétiques en biologie et domaines connexes(2013), ANR-10-LABX-0098,SMP,Fondation Sciences Mathématiques de Paris(2010), European Project: 291214,EC:FP7:ERC,ERC-2011-ADG_20110209,BLOWDISOL(2012), Université Paris Dauphine-PSL-Centre National de la Recherche Scientifique (CNRS), ANR: 10-LABX-0098,SMP,Fondation Sciences Mathématiques de Paris(2010), Université Paris Dauphine-PSL, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Logarithm ,General Mathematics ,Mathematics::Analysis of PDEs ,Stereographic projection ,01 natural sciences ,Sobolev inequality ,fractional heat flow ,fractional Poincaré inequality ,Mathematics - Analysis of PDEs ,stereographic projection ,subcritical interpolation inequalities on the sphere ,spectral gap ,FOS: Mathematics ,Applied mathematics ,[MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP] ,0101 mathematics ,Remainder ,fractional Sobolev inequality ,Mathematics ,fractional logarithmic Sobolev inequality ,Laplace transform ,Euclidean space ,Hardy-Littlewood-Sobolev inequality ,010102 general mathematics ,Statistical and Nonlinear Physics ,26D15 ,35A23 ,35R11 ,26D10 ,26A33 ,35B33 ,010101 applied mathematics ,Sobolev space ,Spectral gap ,Analysis of PDEs (math.AP) - Abstract
This paper is devoted to the family of optimal functional inequalities on the n-dimensional sphere 𝕊 n ${{\mathbb{S}}^{n}}$ , namely ∥ F ∥ L q ( 𝕊 n ) 2 - ∥ F ∥ L 2 ( 𝕊 n ) 2 q - 2 ≤ 𝖢 q , s ∫ 𝕊 n F ℒ s F 𝑑 μ for all F ∈ H s / 2 ( 𝕊 n ) , $\frac{\lVert F\rVert_{\mathrm{L}^{q}({\mathbb{S}}^{n})}^{2}-\lVert F\rVert_{% \mathrm{L}^{2}({\mathbb{S}}^{n})}^{2}}{q-2}\leq\mathsf{C}_{q,s}\int_{{\mathbb{% S}}^{n}}{F\mathcal{L}_{s}F}\,d\mu\quad\text{for all }F\in\mathrm{H}^{s/2}({% \mathbb{S}}^{n}),$ where ℒ s ${\mathcal{L}_{s}}$ denotes a fractional Laplace operator of order s ∈ ( 0 , n ) ${s\in(0,n)}$ , q ∈ [ 1 , 2 ) ∪ ( 2 , q ⋆ ] ${q\in[1,2)\cup(2,q_{\star}]}$ , q ⋆ = 2 n n - s ${q_{\star}=\frac{2n}{n-s}}$ is a critical exponent, and d μ ${d\mu}$ is the uniform probability measure on 𝕊 n ${{\mathbb{S}}^{n}}$ . These inequalities are established with optimal constants using spectral properties of fractional operators. Their consequences for fractional heat flows are considered. If q > 2 ${q>2}$ , these inequalities interpolate between fractional Sobolev and subcritical fractional logarithmic Sobolev inequalities, which correspond to the limit case as q → 2 ${q\to 2}$ . For q < 2 ${q , the inequalities interpolate between fractional logarithmic Sobolev and fractional Poincaré inequalities. In the subcritical range q < q ⋆ ${q , the method also provides us with remainder terms which can be considered as an improved version of the optimal inequalities. The case s ∈ ( - n , 0 ) ${s\in(-n,0)}$ is also considered. Finally, weighted inequalities involving the fractional Laplacian are obtained in the Euclidean space, by using the stereographic projection.
- Published
- 2016
- Full Text
- View/download PDF
50. Inequalities for the exponential remainder of the Taylor series
- Author
-
Sitnik, S. M.
- Subjects
26D15 ,Mathematics - Classical Analysis and ODEs ,Classical Analysis and ODEs (math.CA) ,FOS: Mathematics - Abstract
This is a preprint of 1992 with some updates. We study sections of the exponential function Taylor series. Interesting inequalities for these sections were considered by G.Hardy, Kesava Menon, W. Gautschi, H.Alzer and others. The main aim of this preprint is to investigate new proofs for the main inequality with best constants and its multiple generalizations. Some conjectures are formulated (and some of them were proved recently, see comments of 2016)., Comment: 33 p., text in Russian, resume, contents and comments on recent papers with updated references are in English
- Published
- 2016
- Full Text
- View/download PDF
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