Geometry, Rigidity, and Group Actions
The study of group actions is more than a hundred years old but remains to this day a vibrant and widely studied topic in a variety of mathematic fields. A central development in the last fifty years is the phenomenon of rigidity, whereby one can classify actions of certain groups, such as lattices in semi-simple Lie groups. This provides a way to classify all possible symmetries of important spaces and all spaces admitting given symmetries. Paradigmatic results can be found in the seminal work of George Mostow, Gergory Margulis, and Robert J. Zimmer, among others.
The papers in "Geometry, Rigidity, and Group Actions" explore the role of group actions and rigidity in several areas of mathematics, including ergodic theory, dynamics, geometry, topology, and the algebraic properties of representation varieties. In some cases, the dynamics of the possible group actions are the principal focus of inquiry. In other cases, the dynamics of group actions are a tool for proving theorems about algebra, geometry, or topology. This volume contains surveys of some of the main directions in the field, as well as research articles on topics of current interest.
About the Author
Benson Farb is professor of mathematics at the University of Chicago. He is the author of "Problems on Mapping Class Groups and Related Topics" and co-author of "Noncommutative Algebra".
David Fisher is professor of mathematics at Indiana University.
Reviews
"There is no better way to pay tribute to Robert J. Zimmer's deep and broad impact on mathematics than to assemble a selection of gems written by top experts from the fields that he influenced over the years and to this day. The texts collected by Farb and Fisher range from short masterpieces to authoritative surveys that will surely become classical references. 'Geometry, Rigidity, and Group Actions' will appeal to a wide range of mathematicians" – Nicolas Monod, ecole Polytechnique Federale de Lausanne
"For those interested in learning about the subject of large group actions, sometimes described as 'Zimmer's program', this is a key book to own, and it fits well alongside the earlier rigidity books by Zimmer, Margulis, Feres, and Witte Morris. This is an extensive area of mathematics, with many subareas of research, and for those already familiar with parts of the program, this book will also prove invaluable as a guide to many of the latest developments" – Scot Adams, University of Minnesota
