3 citations · 5 across the 11 of their papers we have counts for
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math.GR2018★ 3 cited
Orthodox semigroups and permutation matchings
Peter M. Higgins
We determine when an orthodox semigroup S has a permutation that sends each member of S to one of its inverses and show that if such a permutation exists, it may be taken to be an…
math.GR2018
Involution matchings, the semigroup of orientation-preserving and orientation-reversing mappings, and inverse covers of the full transformation semigroup
Peter M. Higgins
We continue the study of permutations of a finite regular semigroup that map each element to one of its inverses, providing a complete description in the case of semigroups whose i…
math.GR2018★ 2 cited
Algebras defined by equations
Peter M Higgins, Marcel Jackson
We show that a class of algebras is closed under the taking of homomorphic images and direct products if and only if the class consists of all algebras that satisfy a set of (gener…