Inverse semigroups determined by their partial automorphism monoids

Details Inverse semigroups determined by their partial automorphism monoids Inverse semigroups determined by their partial automorphism monoids

2011-07-25

arxiv.org/abs/1107.4818v1

J. Aust. Math. Soc. 81 (2006), 185 -- 198

Mathematics

Rings and Algebras

Scientific paper

The partial automorphism monoid of an inverse semigroup is an inverse monoid consisting of all isomorphisms between its inverse subsemigroups. We prove that a tightly connected fundamental inverse semigroup $S$ with no isolated nontrivial subgroups is lattice determined "modulo semilattices" and if $T$ is an inverse semigroup whose partial automorphism monoid is isomorphic to that of $S$, then either $S$ and $T$ are isomorphic or they are dually isomorphic chains relative to the natural partial order; a similar result holds if $T$ is any semigroup and the inverse monoids consisting of all isomorphisms between subsemigroups of $S$ and $T$, respectively, are isomorphic. Moreover, for these results to hold, the conditions that $S$ be tightly connected and have no isolated nontrivial subgroups are essential.

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