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TRAVELING WAVES OF AN SIRS EPIDEMIC MODEL WITH SPATIAL DIFFUSION AND TIME DELAY

  • Du, Yanke (Institute of Applied Mathematics, Shijiazhuang Mechanical Engineering College) ;
  • Xu, Rui (Institute of Applied Mathematics, Shijiazhuang Mechanical Engineering College)
  • Received : 2011.04.20
  • Accepted : 2011.08.26
  • Published : 2012.05.30

Abstract

This paper is concerned with an SIRS epidemic model with spatial diffusion and time delay representing the length of the immunity period. By using a new cross iteration scheme and Schauder's fixed point theorem, we reduce the existence of traveling wave solutions to the existence of a pair of upper-lower solutions. By constructing a newfashioned pair of upper-lower solutions, we derive the existence of a traveling wave solution connecting the uninfected steady state and the infected steady state.

Keywords

References

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