“…Recently, many scholars, such as Ni and Wei [2] , Zhang [3] , Khasminskii and Yin [4] , Marques [5] , and Bobkova [6] , have done a great deal of work. Using the differential inequalities and other methods, Mo et al considered the singularly perturbed nonlinear boundary value problems for the ordinary differential equations [7] , the reaction diffusion equations [8][9][10] , the boundary value problems of the elliptic equations [11] , the ecological problems [12] , the shock layer solution of the nonlinear equations for the singularly perturbed problems [13][14] , and the problems of atmospheric physics [15][16][17][18] . In this paper, using a special singularly perturbed method, we study a class of initial boundary value problems for the reaction equations with two parameters.…”