30 citations · 139 across the 26 of their papers we have counts for
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math.GR2011★ 2 cited
Homotopy bases and finite derivation type for Schutzenberger groups of monoids
Robert Gray, António Malheiro, Stephen J. Pride
Given a finitely presented monoid and a homotopy base for the monoid, and given an arbitrary Schutzenberger group of the monoid, the main result of this paper gives a homotopy base…
math.GR2011★ 4 cited
A characterization of adequate semigroups by forbidden subsemigroups
Joao Araujo, Michael Kinyon, Antonio Malheiro
A semigroup is \emph{amiable} if there is exactly one idempotent in each -class and in each -class. A semigroup is \emph{adequate} if it is amiable an…