Topics in Orbit Equivalence

Topics in Orbit Equivalence PDF Author: Alexander S. Kechris
Publisher: Springer Science & Business Media
ISBN: 9783540226031
Category : Computers
Languages : en
Pages : 148

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Book 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.

Topics in Orbit Equivalence

Topics in Orbit Equivalence PDF Author: Alexander S. Kechris
Publisher: Springer Science & Business Media
ISBN: 9783540226031
Category : Computers
Languages : en
Pages : 148

Get Book

Book 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.

Topics in Orbit Equivalence

Topics in Orbit Equivalence PDF Author: Alexander Kechris
Publisher:
ISBN: 9783662164808
Category :
Languages : en
Pages : 148

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Book Description


Topics in Dynamics and Ergodic Theory

Topics in Dynamics and Ergodic Theory PDF Author: Sergey Bezuglyi
Publisher: Cambridge University Press
ISBN: 9780521533652
Category : Mathematics
Languages : en
Pages : 276

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Book Description
This book contains a collection of survey papers by leading researchers in ergodic theory, low-dimensional and topological dynamics and it comprises nine chapters on a range of important topics. These include: the role and usefulness of ultrafilters in ergodic theory, topological dynamics and Ramsey theory; topological aspects of kneading theory together with an analogous 2-dimensional theory called pruning; the dynamics of Markov odometers, Bratteli-Vershik diagrams and orbit equivalence of non-singular automorphisms; geometric proofs of Mather's connecting and accelerating theorems; recent results in one dimensional smooth dynamics; periodic points of nonexpansive maps; arithmetic dynamics; the defect of factor maps; entropy theory for actions of countable amenable groups.

Selected Papers on Analysis and Related Topics

Selected Papers on Analysis and Related Topics PDF Author:
Publisher: American Mathematical Soc.
ISBN: 9780821839287
Category : Mathematics
Languages : en
Pages : 190

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Book Description
This volume contains translations of papers that originally appeared in the Japanese journal 'Sugaku'. The papers range over a variety of topics, including operator algebras, analysis, and statistics.

Automorphisms of Riemann Surfaces, Subgroups of Mapping Class Groups and Related Topics

Automorphisms of Riemann Surfaces, Subgroups of Mapping Class Groups and Related Topics PDF Author: Aaron Wootton
Publisher: American Mathematical Society
ISBN: 1470460254
Category : Mathematics
Languages : en
Pages : 366

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Book Description
Automorphism groups of Riemann surfaces have been widely studied for almost 150 years. This area has persisted in part because it has close ties to many other topics of interest such as number theory, graph theory, mapping class groups, and geometric and computational group theory. In recent years there has been a major revival in this area due in part to great advances in computer algebra systems and progress in finite group theory. This volume provides a concise but thorough introduction for newcomers to the area while at the same time highlighting new developments for established researchers. The volume starts with two expository articles. The first of these articles gives a historical perspective of the field with an emphasis on highly symmetric surfaces, such as Hurwitz surfaces. The second expository article focuses on the future of the field, outlining some of the more popular topics in recent years and providing 78 open research problems across all topics. The remaining articles showcase new developments in the area and have specifically been chosen to cover a variety of topics to illustrate the range of diversity within the field.

Trends in Set Theory

Trends in Set Theory PDF Author: Samuel Coskey
Publisher: American Mathematical Soc.
ISBN: 1470443325
Category : Education
Languages : en
Pages : 207

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Book Description
This volume contains the proceedings of Simon Fest, held in honor of Simon Thomas's 60th birthday, from September 15–17, 2017, at Rutgers University, Piscataway, New Jersey. The topics covered showcase recent advances from a variety of main areas of set theory, including descriptive set theory, forcing, and inner model theory, in addition to several applications of set theory, including ergodic theory, combinatorics, and model theory.

Invariant Descriptive Set Theory

Invariant Descriptive Set Theory PDF Author: Su Gao
Publisher: CRC Press
ISBN: 9781584887942
Category : Mathematics
Languages : en
Pages : 392

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Book Description
Presents Results from a Very Active Area of ResearchExploring an active area of mathematics that studies the complexity of equivalence relations and classification problems, Invariant Descriptive Set Theory presents an introduction to the basic concepts, methods, and results of this theory. It brings together techniques from various areas of mathem

Appalachian Set Theory

Appalachian Set Theory PDF Author: James Cummings
Publisher: Cambridge University Press
ISBN: 1107608503
Category : Mathematics
Languages : en
Pages : 433

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Book Description
Papers based on a series of workshops where prominent researchers present exciting developments in set theory to a broad audience.

Topics in Orbit Equivalence

Topics in Orbit Equivalence PDF Author: Alexander Kechris
Publisher: Springer
ISBN: 9783540226031
Category : Mathematics
Languages : en
Pages : 138

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Book 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.

Algebraic and Topological Dynamics

Algebraic and Topological Dynamics PDF Author: S. F. Koli︠a︡da
Publisher: American Mathematical Soc.
ISBN: 0821837516
Category : Mathematics
Languages : en
Pages : 378

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Book Description
This volume contains a collection of articles from the special program on algebraic and topological dynamics and a workshop on dynamical systems held at the Max-Planck Institute (Bonn, Germany). It reflects the extraordinary vitality of dynamical systems in its interaction with a broad range of mathematical subjects. Topics covered in the book include asymptotic geometric analysis, transformation groups, arithmetic dynamics, complex dynamics, symbolic dynamics, statisticalproperties of dynamical systems, and the theory of entropy and chaos. The book is suitable for graduate students and researchers interested in dynamical systems.