Sufficient conditions are obtained for the existence of a positive periodic หn ลฝ . ลฝ .w ลฝ . ลฝ . solution of the periodic neutral delay equation N t s N t a t y ร b t js1 j n ลฝ . ลฝ . ลฝ . x N t y y ร c t N t y , which arise in a ''food-limited'' population model. j j s 1 j j
Positive periodic solutions of a periodic neutral delay logistic equation with impulses
โ Scribed by Yongkun Li
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 267 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0898-1221
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โฆ Synopsis
By using a fixed point theorem of strict-set-contraction, some criteria are established for the existence of positive periodic solutions for a periodic neutral functional differential equation with impulses of the form
๐ SIMILAR VOLUMES
A new criterion is established for the existence of positive periodic solutions to the following delay logistic equation: where r (t), a(t), b(t) are periodic continuous functions, a(t) > 0, b(t) โฅ 0 and r (t) has positive average.
We study the existence of periodic solutions for a neutral differential equation with feedback control of the form
In this work, we present a theorem for existence and uniqueness of almost periodic solutions for logistic equations with infinite delay. Our result improves some recent results. Moreover, an open question raised by G. Seifert is answered completely.