{ "id": "2209.12167", "version": "v1", "published": "2022-09-25T07:09:10.000Z", "updated": "2022-09-25T07:09:10.000Z", "title": "On equivalence relations induced by locally compact abelian Polish groups", "authors": [ "Longyun Ding", "Yang Zheng" ], "comment": "14 pages", "categories": [ "math.LO" ], "abstract": "Given a Polish group $G$, let $E(G)$ be the right coset equivalence relation $G^\\omega/c(G)$, where $c(G)$ is the group of all convergent sequences in $G$. The connected component of the identity of a Polish group $G$ is denoted by $G_0$. Let $G,H$ be locally compact abelian Polish groups. If $E(G)\\leq_B E(H)$, then there is a continuous homomorphism $S:G_0\\rightarrow H_0$ such that $\\ker(S)$ is non-archimedean. The converse is also true when $G$ is connected and compact. For $n\\in{\\mathbb N}^+$, the partially ordered set $P(\\omega)/\\mbox{Fin}$ can be embedded into Borel equivalence relations between $E({\\mathbb R}^n)$ and $E({\\mathbb T}^n)$.", "revisions": [ { "version": "v1", "updated": "2022-09-25T07:09:10.000Z" } ], "analyses": { "subjects": [ "03E15" ], "keywords": [ "locally compact abelian polish groups", "right coset equivalence relation", "borel equivalence relations", "convergent sequences" ], "note": { "typesetting": "TeX", "pages": 14, "language": "en", "license": "arXiv", "status": "editable" } } }