DS1 spectrogram: Embedding ample semigroups as (2,1,1)-subalgebras of inverse semigroups

Embedding ample semigroups as (2,1,1)-subalgebras of inverse semigroups

2508.01949

Authors

Aftab Hussain Shah,Kristo Väljako,Nasir Sohail

Abstract

The problem of embedding an ample semigroup in an inverse semigroup as a (2, 1, 1)-type subalgebra is known to be undecidable. In this article, we investigate the problem for certain classes of ample semigroups.

We also give examples of semigroups that are left (respectively, right) but not right (respectively, left) ample.

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