Some New Existence Results for Positive Periodic Solutions to First-Order Neutral Differential Equations with Variable Coefficients

In this article, we deal with some new existence results for positive periodic solutions for a class of neutral functional differential equations by employing Krasnoselskii’s fixed-point theorem and the properties of a neutral operator. Our results generalize corresponding works from the past. An ex...

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Hlavní autoři:	Lingping Zhang, Bo Du
Médium:	Artigo
Jazyk:	Inglês
Vydáno:	MDPI AG 2022-10-01
Edice:	Mathematics
Témata:	first-order fixed point theorem existence positive periodic solution
On-line přístup:	https://www.mdpi.com/2227-7390/10/20/3770
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