Electron. J. Diff. Eqns., Vol. 2007(2007), No. 110, pp. 1-10.

Positive periodic solutions of neutral logistic difference equations with multiple delays

Yongkun Li, Qian Chen

Abstract:
Using a fixed point theorem of strict-set-contraction, we some established the existence of positive periodic solutions for the neutral logistic difference equation, with multiple delays,
$$
 \Delta x(n)=x(n)\Big[ a(n) -\sum_{i=1}^{p}a_{i}(n)
 x(n-\tau_{i}(n))  -\sum_{j=1}^{q}c_{j}(n)
 \Delta x(n-\sigma_{j}(n))\Big].
 $$

Submitted May 22, 2007. Published August 14, 2007.
Math Subject Classifications: 34K13, 34K40, 92B05.
Key Words: Positive periodic solution; neutral functional difference equation; strict-set-contraction.

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Yongkun Li
Department of Mathematics, Yunnan University
Kunming, Yunnan 650091, China
email: yklie@ynu.edu.cn
Qian Chen
Department of Mathematics, Yunnan University
Kunming, Yunnan 650091, China

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