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We introduce a model to describe the evolution of bacterial meningitis epidemics in a non-constant population. We derive the value of the basic reproduction number of our model. We analyze the local and global stability of the disease-free and endemic equilibria. We confirm the results by a numerical analysis of the model. [ABSTRACT FROM AUTHOR]

The paper provided a new notion of neutrosophic separation axioms as neutrosophic gαg-Ri-space & neutrosophic gαg-Tj-space (note that the indexes i & j are natural numbers of the spaces R & T are from 0 to 1 & from 0 to 2 alternately). [ABSTRACT FROM AUTHOR]

This study reveals new concepts of neutrosophic crisp closed sets named neutrosophic crisp g-closed sets, neutrosophic crisp αg-closed sets, neutrosophic crisp gα-closed sets, and neutrosophic crisp gαg-closed sets. Furthermore, their ultimate features in neutrosophic crisp topological spaces are examined. Moreover, the consequent new concepts are introduced, such as neutrosophic crisp gαg-closure and neutrosophic crisp gαg-interior and finding some of their characteristics. [ABSTRACT FROM AUTHOR]

In this paper, we should utilize the concepts of Nα-closed and Nα-closed sets to define some new types of weakly nano closed functions such as; Nα-closed functions, Nα*-closed functions, Nα**-closed functions, Nsα-closed functions, Nα*-closed functions and Nsα**-closed functions. Also, we should explain the relationships between these types of weakly nano closed functions and the concepts of nano closed functions. Furthermore, we should prove some theorems, properties and remarks. [ABSTRACT FROM AUTHOR]

In this paper we present another class of N-CS called N gαg-CS and study their fundamental properties in nano topological spaces. We also present N gαg-continuous maps with some of its properties. [ABSTRACT FROM AUTHOR]