000 02311cam a22002655i 4500
001 136455
003 ISI Library, Kolkata
005 20160118130703.0
008 150707s2015 nyu 000 0 eng
020 _a9783319193328
040 _aISI Library
082 0 4 _a512.2
_223
_bC251
100 1 _aCapraro, Valerio.
245 1 0 _aIntroduction to sofic and hyperlinear groups and connes' embedding conjecture /
_cValerio Capraro and Martino Lupini with and appendix by Vladimir Pestov.
260 _aSwitzerland :
_bSpringer,
_c2015.
300 _aviii, 151 p. ;
_c24 cm.
490 0 _aLecture notes in mathematics ;
_v2136.
504 _aIncludes bibliographical references and index.
505 0 _a1. Introduction-- 2. Sofic and Hyperlinear Groups-- 3. Connes' Embedding Conjecture-- Conclusions-- Bibliography-- Index.
520 _aThis monograph presents some cornerstone results in the study of sofic and hyperlinear groups and the closely related Connes' embedding conjecture. These notions, as well as the proofs of many results, are presented in the framework of model theory for metric structures. This point of view, rarely explicitly adopted in the literature, clarifies the ideas therein, and provides additional tools to attack open problems. Sofic and hyperlinear groups are countable discrete groups that can be suitably approximated by finite symmetric groups and groups of unitary matrices. These deep and fruitful notions, introduced by Gromov and Radulescu, respectively, in the late 1990s, stimulated an impressive amount of research in the last 15 years, touching several seemingly distant areas of mathematics including geometric group theory, operator algebras, dynamical systems, graph theory, and quantum information theory. Several long-standing conjectures, still open for arbitrary groups, are now settled for sofic or hyperlinear groups. The presentation is self-contained and accessible to anyone with a graduate-level mathematical background. In particular, no specific knowledge of logic or model theory is required. The monograph also contains many exercises, to help familiarize the reader with the topics present.
650 0 _aGroup theory.
700 1 _aLupini, Martino,
_eauthor
700 1 _aPestov, Vladimir,
_eappendix creator
942 _2ddc
_cBK
999 _c420430
_d420430