摘要

Chen, Guo and Yao studied traveling wave solutions connecting predator-free state to coexistence state of following diffusive predator-prey model: {u(t) - u(xx) + ru (1 - u) - rkuv, v(t) = dv(xx) + sv(1 - v/u), when 0 < k < 1 in recent paper [4]. But left the case when k >= 1 as an open problem due to a technical difficulty. The aim of this paper is to solve the case when k = 1, by introducing an auxiliary system of equations. Moreover some results about the case when k > 1 are also presented.