The present volume contains a selection of papers submitted by the participants of the Third Polish Symposium on Nonlinear Analysis held in Łódź, January 29-31, 2001, and organized by the Faculty of Mathematics of the Łódź University and the Juliusz Schauder Center of Nonlinear Studies at the Nicolaus Copernicus University in Toruń.
The main purpose of this Symposium was to integrate the large group of Polish researchers interested in different aspects of nonlinear problems, to present their recent results and to create a convenient platform for the exchange of scientific information and experience. Nonlinear Analysis is a major branch of mathematics encompassing various problems arising in mathematical, functional and convex analysis, topology, fixed point theory and their applications in the theory of ordinary and partial differential equations, inclusions and the dynamical systems, control and game theories. There is a number of strong Polish scientific centers where these topics are extensively studied.
During the Symposium a special session celebrating the 60-th anniversary of Professor Lech Górniewicz was organized. Professor Górniewicz, one of the leading specialists in the field of Nonlinear Analysis, is the head and a co-founder (together with Professor Andrzej Granas) of the Schauder Center, the Managing Editor of the journal "Topological Methods in Nonlinear Analysis" published by the Schauder Center and one of the persons promoting the development of nonlinear studies in Poland. The contributing authors and the editors are proud to dedicate this volume to Professor Górniewicz.
The papers, received by the editors in Fall 2001, were refereed and appear in alphabetical order.
The organizers of the Symposium and the editors express their gratitude to all the participants, the authors and all other persons who contributed to the program and activities of the Symposium, and to the publishers of the Lecture Notes of the Juliusz Schauder Center of Nonlinear Studies, and the Nicolaus Copernicus University for the their help in preparing this volume for publication.
Wojciech Kryszewski, Andrzej Nowakowski