Well-Posed Nonlinear Problems

​Mircea Sofonea obtained the PhD degree at the University of Bucarest (Romania), and the habilitation at the Université Blaise Pascal of Clermont-Ferrand (France). Currently, he is a Distinguished Profesor at the University of Perpignan Via Domitia (France) and an Honorary Member of the Institute of Mathematics of the Romanian Academy of Sciences. His areas of interest and expertise include : multivalued operators, variational and hemivariational inequalities, solid mechanics, contact mechanics and numerical methods for partial differential equations. Most of his reseach is dedicated to the Mathematical Theory of Contact Mechanics, of which he is one of the main contributors. His ideas and results were published in eight books, four monographs, and more than three hundred research articles.

“This book serves as a comprehensive resource for advanced graduate studies in MTCM, effectively bridging the theoretical concepts of MTWP with practical applications in MTCM. Authored by a pioneer in the field, it is invaluable for both novice and seasoned researchers. The book's meticulous writing, coupled with its reliance on only basic prerequisites in general topology, functional analysis, and solid mechanics, makes it highly accessible to a broad audience.” (Hicham Benaissa, Mathematical Reviews, May, 2025) “This book aims at drawing a link between the theory of well-posedness for various types of problems (i.e., differential problems, variational inequalities, split vs. dual problems, etc.) and the theory of modelling for contact mechanics. In particular, the author provides a huge amount of specific examples where he uses the theoretic results that he built.” (Davide Buoso, zbMATH 1544.47001, 2024)

• Part I An Abstract Well-posedness Concept.- Nonlinear Problems and Their Solvability.- Tykhonov Triples and Associate Well-posedness Concept.- Part II Relevant Examples of Well-posed Problems.- Fixed Point Problems.- Variational Inequalities.- Variational-hemivariational Inequalities.- Inclusions and Sweeping Processes.- Optimal Control and Optimization.- Part III Well-posed Contact Problems.- Preliminaries of Contact Mechanics.- Well-posed Static Contact Problems. Well-posed Quasistatic Contact Problems.