328 results on '"Brzdęk, Janusz"'
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2. A fixed point theorem and Ulam stability of a general linear functional equation in random normed spaces
3. Barrelled Weakly Köthe–Orlicz Summable Sequence Spaces
4. On Ulam Stability of a Generalized Delayed Differential Equation of Fractional Order
5. Comments on fixed point results in classes of function with values in a b–metric space
6. Remarks on Approximate Solutions to Difference Equations in Various Spaces
7. Investigations on the Hyers–Ulam stability of generalized radical functional equations
8. A fixed point theorem in n-Banach spaces and Ulam stability
9. Banach Limit in the Stability Problem of a Linear Functional Equation
10. A fixed point theorem and the Ulam stability in generalized dq-metric spaces
11. Barrelled Weakly Köthe–Orlicz Summable Sequence Spaces.
12. On Ulam Stability with Respect to 2-Norm
13. On approximate roots of polynomials and systems of polynomials in ultrametric Banach algebras
14. Stability problem for the composite type functional equations
15. Remarks on solutions to a generalization of the radical functional equations
16. Hyers–Ulam stability with respect to gauges
17. Remarks on Solutions of a Functional Equation Arising from an Asymmetric Switch
18. A note on asymptotically approximate generalized Lie derivations
19. Ulam's stability of a generalization of the Fréchet functional equation
20. On the generalized Fréchet functional equation with constant coefficients and its stability
21. On Orthogonally Exponential and Orthogonally Additive Mappings
22. A fixed point theorem and Ulam stability of a general linear functional equation in random normed spaces
23. On approximate solutions of some delayed fractional differential equations
24. Stability for a family of equations generalizing the equation of p-Wright affine functions
25. A Remark on Some Simultaneous Functional Inequalities in Riesz Spaces
26. Selections of Set-valued Maps Satisfying Some Inclusions and the Hyers–Ulam Stability
27. On Stability of the Linear and Polynomial Functional Equations in Single Variable
28. Remarks on Stability of the Equation of Homomorphism for Square Symmetric Groupoids
29. A Note on the Functions that Are Approximately p-Wright Affine
30. Acknowledgment
31. Preface
32. Dedication
33. Fixed-point theorem in classes of function with values in a dq-metric space
34. Ulam Stability of a General Linear Functional Equation in Modular Spaces
35. On the structure and solutions of functional equations arising from queueing models
36. Fixed points of some nonlinear operators in spaces of multifunctions and the Ulam stability
37. Remarks on Stability of the Linear Functional Equation in Single Variable
38. On Ulam Stability of Functional Equations in 2-Normed Spaces—A Survey II
39. On the solutions of the functional equation $f(xf(y)^l+yf(x)^k)=tf(x)f(y)$
40. Remarks on stability and non-stability of the linear functional equation of the first order
41. Fixed points of a mapping and Hyers–Ulam stability
42. Note on stability of the Cauchy equation — an answer to a problem of Th. M. Rassias
43. A note on solutions of a functional equation arising in a queuing model for a LAN gateway
44. On functions that are approximate fixed points almost everywhere and Ulam’s type stability
45. Banach Limit and Ulam Stability of Nonhomogeneous Cauchy Equation
46. On Solutions and Stability of Stochastic Functional Equations Emerging in Psychological Theory of Learning
47. Remarks on the stability of Lie homomorphisms
48. Remarks on the Hyers–Ulam stability of some systems of functional equations
49. Remarks on stability of some inhomogeneous functional equations
50. A fixed point theorem and the Hyers–Ulam stability in non-Archimedean spaces
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