{ "id": "1909.13285", "version": "v1", "published": "2019-09-29T13:55:42.000Z", "updated": "2019-09-29T13:55:42.000Z", "title": "On the topological dynamics of automorphism groups; a model-theoretic perspective", "authors": [ "Krzysztof Krupinski", "Anand Pillay" ], "categories": [ "math.LO", "math.GN" ], "abstract": "We give a model-theoretic treatment of the fundamental results of Kechris-Pestov-Todor\\v{c}evi\\'{c} theory in the more general context of automorphism groups of not necessarily countable structures. One of the main points is a description of the universal ambit as a certain space of types in an expanded language. Using this, we recover various results of Kechris-Pestov-Todor\\v{c}evi\\'{c}, Moore, Ngyuen Van Th\\'{e}, in the context of automorphism groups of not necessarily countable structures, as well as Zucker.", "revisions": [ { "version": "v1", "updated": "2019-09-29T13:55:42.000Z" } ], "analyses": { "subjects": [ "03C98", "54H20", "05D10" ], "keywords": [ "automorphism groups", "topological dynamics", "model-theoretic perspective", "necessarily countable structures", "ngyuen van" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }