Zdzislav Kamont

Functional differential and difference inequalities with impulses

abstract:
The following problems for partial functional differential equations are considered: the Cauchy problem on the Haar pyramid for first order equations, mixed problems on bounded domains for Hamilton-Jacobi equations, initial boundary value problem of the Dirichlet tyoe for nonlinear parabolic equations. Impulses depend on functional variable and they are given at fixed points. The theory of functional differential inequalities is presented in the paper. Moreover, discrete versions of theorems on differential inequalities are presented. The numerical method of lines and difference methods are examples of applications of the theory.

Mathematics Subject Classification: 35R10.

Key words and phrases: Functional differential inequalities, nonlinear estimates of the Perron type, equations with impulses, comparison theorems, numerical method of lines, stability of difference methods.