The singularly perturbed nonlinear problem εy" = f(x, y’)y + g(x, y’), 0 <x < 1, 0 < ε << 1, y(0) = A, y(1) = B, where y, f, g, A, B are n-dimensional vectors is considered. Using the iteration...The singularly perturbed nonlinear problem εy" = f(x, y’)y + g(x, y’), 0 <x < 1, 0 < ε << 1, y(0) = A, y(1) = B, where y, f, g, A, B are n-dimensional vectors is considered. Using the iteration method and the theory of differential inequalities, the existence and asymptotic behavior of solution for the boundary value problems are studied.展开更多
In this paper a class of singularly perturbed initial boundary value problems for the reaction diffusion integral differential system are considered. Using the iteration method and the differential inequalities, the ...In this paper a class of singularly perturbed initial boundary value problems for the reaction diffusion integral differential system are considered. Using the iteration method and the differential inequalities, the existence, uniqueness and its asymptotic behavior of solution for the initial boundary value problems are studied.展开更多
This paper deals with the singular nonlinear third-order periodic boundary value problem u'' + p(3)u = f (t, u), 0 less than or equal to t less than or equal to 2pi, with u((i)) (0) = u((i)) (2pi), i = 0, 1, 2...This paper deals with the singular nonlinear third-order periodic boundary value problem u'' + p(3)u = f (t, u), 0 less than or equal to t less than or equal to 2pi, with u((i)) (0) = u((i)) (2pi), i = 0, 1, 2, where p is an element of (Graphics) and f is singular at t = 0, t = 1 and u = 0. Under suitable weaker conditions than those of [1], it is proved by constructing a special cone in C[0, 2pi] and employing the fixed point index theory that the problem has at least one or at least two positive solutions.展开更多
文摘The singularly perturbed nonlinear problem εy" = f(x, y’)y + g(x, y’), 0 <x < 1, 0 < ε << 1, y(0) = A, y(1) = B, where y, f, g, A, B are n-dimensional vectors is considered. Using the iteration method and the theory of differential inequalities, the existence and asymptotic behavior of solution for the boundary value problems are studied.
基金This project is supported by the National Natural Science Foundation of China
文摘In this paper a class of singularly perturbed initial boundary value problems for the reaction diffusion integral differential system are considered. Using the iteration method and the differential inequalities, the existence, uniqueness and its asymptotic behavior of solution for the initial boundary value problems are studied.
文摘This paper deals with the singular nonlinear third-order periodic boundary value problem u'' + p(3)u = f (t, u), 0 less than or equal to t less than or equal to 2pi, with u((i)) (0) = u((i)) (2pi), i = 0, 1, 2, where p is an element of (Graphics) and f is singular at t = 0, t = 1 and u = 0. Under suitable weaker conditions than those of [1], it is proved by constructing a special cone in C[0, 2pi] and employing the fixed point index theory that the problem has at least one or at least two positive solutions.
