The structure of completely regular semigroups

Author:
Mario Petrich

Journal:
Trans. Amer. Math. Soc. **189** (1974), 211-236

MSC:
Primary 20M10

MathSciNet review:
0330331

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Abstract: The principal result is a construction of completely regular semigroups in terms of semilattices of Rees matrix semigroups and their translational hulls. The main body of the paper is occupied by considerations of various special cases based on the behavior of either Green's relations or idempotents. The influence of these special cases on the construction in question is studied in considerable detail. The restrictions imposed on Green's relations consist of the requirement that some of them be congruences, whereas the restrictions on idempotents include various covering conditions or the requirement that they form a subsemigroup.

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DOI:
http://dx.doi.org/10.1090/S0002-9947-1974-0330331-4

Keywords:
Completely regular semigroups,
orthodox semigroups,
bands of groups,
semilattices of groups,
translational hull,
completely simple semigroups,
rectangular groups,
classification of semigroups

Article copyright:
© Copyright 1974
American Mathematical Society