Autor:	Wen-Hai Pan, Wei Long
Předmět:	EXISTENCE theorems SET theory NONLINEAR systems FIXED point theory MATHEMATICAL analysis MATHEMATICAL models
Zdroj:	Journal of Concrete & Applicable Mathematics; Jan-Apr2014, Vol. 12 Issue 1/2, p160-168, 9p
Abstrakt:	This paper is concerned with the existence of positive periodic solutions to nonlinear discrete systems of the type xi (n) = ... fi(k, x1 (k), x2(k),...,xm(k)), i = 1, 2,..., m, which arises in some epidemic model. Our main results are proved by using the method of sub-super solutions and Schauder's fixed point theorem. [ABSTRACT FROM AUTHOR]
Databáze:	Supplemental Index
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