Equivalence relations invariant under group actions
Logic
2018-10-25 v2 General Topology
Group Theory
Abstract
We extend some recent results about bounded invariant equivalence relations and invariant subgroups of definable groups: we show that type-definability and smoothness are equivalent conditions in a wider class of relations than heretofore considered, which includes all the cases for which the equivalence was proved before. As a by-product, we show some analogous results in purely topological context (without direct use of model theory).
Cite
@article{arxiv.1602.09009,
title = {Equivalence relations invariant under group actions},
author = {Tomasz Rzepecki},
journal= {arXiv preprint arXiv:1602.09009},
year = {2018}
}
Comments
23 pages, streamlined version