Contemporary Mathematics, Volume 2 Issue 1 (2021), 1-102 < Previous vol / issue Next vol/issue >

This issue is in progress but contains articles that are final and fully citable.

Some Generalizations of Jensen's Inequality

by Slavko Simic, Bandar Almohsen

Abstract: In this article, we give some improvements and generalizations of the famous Jensen's and Jensen-Mercer inequalities for twice differentiable functions, where convexity property of the target function...

Open Access Research Article

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The Polypermutation Group of an Associative Ring

by Jason K. C. Polak

Abstract: We study permutation polynomials through the device of the polypermutation group of an associative ring R, denoted by Pgr(R). We derive some basic properties and compute the cardinality of Pgr(Z/pk ) ...

Open Access Research Article

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On the P-Adic Valuations of Stirling Numbers of the Second Kind

by S. S. Singh, A. Lalchhuangliana, P. K. Saikia

Abstract: ...

Open Access Research Article

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Asymptotic Behavior of Positive Solutions to a Nonlinear Elliptic Coupled System on an Exterior Domain

by Habib Mâagli, Zagharide Zine El Abidine

Abstract: ...

Open Access Research Article

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A Mathematical Model for the Study of Effectiveness in Therapy in Tuberculosis Taking into Account Associated Diseases

by Erick Delgado Moya, Alain Pietrus, Sergio Muniz Oliva

Abstract: Tuberculosis (TB) remains a major global health problem. We present a deterministic mathematical model for the study of the effectiveness of therapy in TB to determine the impact of HIV/AIDS and diabe...

Open Access Research Article

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