The local-global property for G-invariant terms
Rings and Algebras
2021-10-22 v2 Computational Complexity
Abstract
For some Maltsev conditions it is enough to check if a finite algebra satisfies locally on subsets of bounded size, in order to decide, whether satisfies (globally). This local-global property is the main known source of tractability results for deciding Maltsev conditions. In this paper we investigate the local-global property for the existence of a -term, i.e. an -ary term that is invariant under permuting its variables according to a permutation group Sym(). Our results imply in particular that all cyclic loop conditions (in the sense of Bodirsky, Starke, and Vucaj) have the local-global property (and thus can be decided in polynomial time), while symmetric terms of arity fail to have it.
Keywords
Cite
@article{arxiv.2109.02065,
title = {The local-global property for G-invariant terms},
author = {Alexandr Kazda and Michael Kompatscher},
journal= {arXiv preprint arXiv:2109.02065},
year = {2021}
}
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22 pages