Persistence and failure of complete spreading in delayed reaction-diffusion equations

Lin, Guo; Ruan, Shigui

doi:10.1090/proc/12811

Persistence and failure of complete spreading in delayed reaction-diffusion equations
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by Guo Lin and Shigui Ruan PDF

Proc. Amer. Math. Soc. 144 (2016), 1059-1072 Request permission

Abstract:

This paper deals with the long time behavior in terms of complete spreading for a population model described by a reaction-diffusion equation with delay, of which the corresponding reaction equation is bistable. When a complete spreading occurs in the corresponding undelayed equation with initial value admitting compact support, it is proved that the invasion can also be successful in the delayed equation if the time delay is small. To spur on a complete spreading, the choice of the initial value would be very technical due to the combination of delay and Allee effects. In addition, we show the possible failure of complete spreading in a quasimonotone delayed equation to illustrate the complexity of the problem.

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