A nonstandard construction of direct limit group actions
Group Theory
2022-04-18 v3
Abstract
Manevitz and Weinberger (1996) proved that the existence of effective -Lipschitz -actions implies the existence of effective -Lipschitz -actions for all compact connected manifolds with metrics, where is a fixed Lipschitz constant. The -actions were constructed from suitable actions of a sufficiently large hyperfinite cyclic group in the sense of nonstandard analysis. By modifying their construction, we prove that for every direct system of torsion groups with monomorphisms, the existence of effective -Lipschitz -actions implies the existence of effective -Lipschitz -actions. This generalises Manevitz and Weinberger's result.
Keywords
Cite
@article{arxiv.1812.00575,
title = {A nonstandard construction of direct limit group actions},
author = {Takuma Imamura},
journal= {arXiv preprint arXiv:1812.00575},
year = {2022}
}