{"product_id":"topics-in-orbit-equivalence-von-alexander-kechris-benjamin-d-miller","title":"Topics in Orbit Equivalence","description":"This volume provides a self-contained introduction to some topics in orbit equivalence theory, a branch of ergodic theory. The first two chapters focus on  hyperfiniteness and amenability. Included here are proofs of Dye's theorem that probability measure-preserving, ergodic actions of the integers are orbit equivalent and of the theorem of Connes-Feldman-Weiss identifying amenability and hyperfiniteness for non-singular equivalence relations. The presentation here is often influenced by descriptive set theory, and Borel and generic analogs of various results are discussed. The final chapter is a detailed account of Gaboriau's recent results on the theory of costs for equivalence relations and groups and its applications to proving rigidity theorems for actions of free groups.\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783540226031\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Softcover - 9783540226031","offer_id":39436394954845,"sku":"9783540226031","price":40.65,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/41c908c2-babb-4504-9da8-368a68af2e8e.jpg?v=1772086043","url":"https:\/\/shop.autorenwelt.de\/products\/topics-in-orbit-equivalence-von-alexander-kechris-benjamin-d-miller","provider":"Autorenwelt Shop","version":"1.0","type":"link"}