Rigidity Theorems for Actions of Product Groups and Countable Borel Equivalence RelationsPaperback, 1 August 2005

Contributes to the theory of Borel equivalence relations, considered up to Borel reducibility, and measures preserving group actions considered up to orbit equivalence. This title catalogs the actions of products of the free group and obtains additional rigidity theorems and relative ergodicity results in this context.