Spreading speeds and travelling waves for non-monotone time-delayed lattice equations

Author:

Fang Jian12,Wei Junjie1,Zhao Xiao-Qiang2

Affiliation:

1. Department of Mathematics, Harbin Institute of Technology, Harbin 150001, People’s Republic of China

2. Department of Mathematics and Statistics, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada A1C 5S7

Abstract

A non-monotone time-delayed lattice system with global interaction is considered. The spreading speed, including the upward convergence, is established by comparison arguments and a fluctuation method. The existence of travelling waves is obtained by Schauder’s fixed-point theorem and a limiting process. It turns out that the minimal wave speed of travelling waves coincides with the spreading speed.

Publisher

The Royal Society

Subject

General Physics and Astronomy,General Engineering,General Mathematics

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