Coarse Geometry of Topological Groups

This book provides a general framework for doing geometric group theory for many non-locally-compact topological transformation groups that arise in mathematical practice, including homeomorphism and diffeomorphism groups of manifolds, isometry groups of separable metric spaces and automorphism groups of countable structures. Using Roe's framework of coarse structures and spaces, the author defines a natural coarse geometric structure on all topological groups. This structure is accessible to investigation, especially in the case of Polish groups, and often has an explicit description, generalising well-known structures in familiar cases including finitely generated discrete groups, compactly generated locally compact groups and Banach spaces. In most cases, the coarse geometric structure is metrisable and may even be refined to a canonical quasimetric structure on the group. The book contains many worked examples and sufficient introductory material to be accessible to beginning graduate students. An appendix outlines several open problems in this young and rich theory.

Reviews & endorsements

'Great care is taken with exposition and proofs are spelled out in full detail. The book does not have a lot of prerequisites apart from some basic knowledge of topological groups, and it is accessible to graduate students or non-specialists interested in the subject. As it is a research monograph rather than a textbook, exercises are not included; however, it is certainly possible to teach parts of it in a topics graduate course on Polish groups or geometric group theory … In view of the research presented in this monograph, now Polish groups can also be considered as geometric objects, and this new facet of the theory will undoubtedly lead to interactions with yet other branches of mathematics. The clear exposition and the numerous open questions that are discussed make the book an excellent entry point to research in the field.' Todor Tsankov, Bulletin of the American Mathematical Society

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Product details

• Date Published: December 2021
• format: Hardback
• isbn: 9781108842471
• length: 200 pages

• dimensions: 235 x 159 x 25 mm
• weight: 0.614kg
• availability: Available