In this paper,we discuss the characteristic problem of one kind of pseudo-parabolic system of equation;the characteristic of its existence and uniqueness are proved by using the Riemann square matrix and functional integral system of equation.

In this paper, we discuss a class of perturbation problems for pseudoparabolic equations with a singular inhomogeneous term and prove that the existence and limit behaviour of generalized solutions to the perturbation problems, moreover we botain that the solutions of perturbation problems converge to the solutions of the original problems in a certain sense as tends to zero.

In this paper, a class of non_linear and non_local boundary value problems for pseudoparabolic equations is discussed.

This paper deals with a class of inverse problems of determining the unknown source term for the pseudoparabolic equation.

This paper deals with a class of inverse problems to determine the constant coefficient for the pseudoparabolic equation with special initial condition.

Combining Riemann′s method with the fixed point theory effectively,we study a class of backwards heat flow problems of one-dimensional nonlinear pseudoparabolic equations,and obtain the existence and uniqueness of the solution of the inverse problem.

A weak solution to the viscous Laplacian evolution equation with nonlinear source(a pseudo-parabolic equation) is proved to be in existence by using the time-discrete method.

The first type studied in this paper is pseudo-parabolic equation.