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arXiv · 2110.11513

Product Expansions Redux

Karsten Henckell·Samuel Herman
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Abstract

We introduce a generalization of the product expansion of a finite semigroup. As an application, we provide an alternative proof of the decidability of pointlike sets for pseudovarieties consisting of semigroups whose subgroups all belong to a given decidable pseudovariety of groups.

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Karsten Henckell, Samuel Herman. 2021-10-21. Product Expansions Redux. https://arxiv.org/abs/2110.11513

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