Unabridged republication is a resource for topics in elliptic equations and systems and free boundary problems.

The book deals with the mathematical theory of vector variational inequalities with special reference to equilibrium problems. Such models have been introduced

The essential aim of this book is to consider a wide set of problems arising in the mathematical modeling of mechanical systems under unilateral constraints. In

This comprehensive volume covers a wide range of duality topics ranging from simple ideas in network flows to complex issues in non-convex optimization and mult

Equilibrium is a concept used in operations research and economics to understand the interplay of factors and problems arising from competitive systems in the e