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math.RA2023
Computing finite index congruences of finitely presented semigroups and monoids
Marina Anagnostopoulou-Merkouri, Reinis Cirpons, James D. Mitchell +1
In this paper, we describe an algorithm for computing the left, right, or 2-sided congruences of a finitely presented semigroup or monoid with finitely many classes, and an alterna…
math.RA2021★ 1 cited
Properties of Congruence Lattices of Graph Inverse Semigroups
Marina Anagnostopoulou-Merkouri, Zak Mesyan, James D. Mitchell
From any directed graph one can construct the graph inverse semigroup , whose elements, roughly speaking, correspond to paths in . Wang and Luo showed that the congrue…