Journal of the Australian Mathematical Society (Series A)

Research Article

On the lattice of congruences on an eventually regular semigroup

P. M. Edwardsa1

a1 Department of Econometrics Monash University Clayton, Victoria Australia 3168

Abstract

A natural equivalence θ on the lattice of congruences λ(S) of a semigroup S is studied. For any eventually regular semigroup S, it is shown that θ is a congruence, each θ-class is a complete sublattice of λ(S) and the maximum element in each θ-class is determined. 1980 Mathematics subject classification (Amer. Math. Soc.): 20 M 10.

(Received August 19 1983)

1980 Mathematics subject classification (Amer. Math. Soc.)

  • 20 M 10