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Local-global property for G-invariant terms

Publication at Faculty of Mathematics and Physics |
2022

Abstract

For some Maltsev conditions Sigma it is enough to check if a finite algebra A satisfies Sigma locally on subsets of bounded size in order to decide whether A satisfies Sigma (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 G-term, i.e. an n-ary term that is invariant under permuting its variables according to a permutation group G 2 fail to have it.