Browsing COLLEGE OF AGRICULTURAL & NATURAL SCIENCES by Subject "Positive periodic solutions"

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Positive periodic solutions for neutral functional differential systems

Yankson, Ernest (University of Cape Coast, 2015)

We study the existence of positive periodic solutions of a system of neutral diferential equations. In the process we construct two mappings in which one is a contraction and the other compact. A Krasnoselskii’s fixed point ...
Positive periodic solutions in neutral delay difference equations

Raffoul, Youssef N.; Yankson, Ernest (University of Cape Coast, 2010)

We use Krasnoselskii’s fxed oint theorem to obtain suffcient conditions for the existence of a positive periodic solution of the neutral delay difference equation x(n + 1) = a(n)x(n) + c∆x(n − τ ) + g(n, x(n − τ ))
Positive solutions for a system of periodic neutral delay difference equations

Yankson, Ernest (University of Cape Coast, 2011)

In this article we consider the existence of positive solutions of a system of periodic neutral diference equations. The main tool employed is the Krasnosel’skii’s fxed point theorem for the sum of a completely continuous ...

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