Second order evolutionary partial differential variational-like inequalities

Abstract

This work is dedicated to the study of a second order evolutionary partial differential variational-like inequality in Banach space. We obtain the mild solution of our problem by applying the concept of strongly continuous cosine family of bounded linear operators, fixed point theorem for condensing multi-valued operators and measure of non-compactness. It is proved that the solution set of mixed variational-like inequalities is non-empty, bounded, closed and convex.

Keywords

• second order evolution equation
• variational-like inequality
• cosine family
• measure of non-compactness
• mild solution