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Baer semigroup coordinatisations of distributive lattices

Published online by Cambridge University Press:  14 November 2011

T. S. Blyth
Affiliation:
Mathematical Institute, University of St Andrews

Synopsis

In a previous publication we investigated certain idempotent residuated mappings and showed how these could be used to provide a solution to the problem of finding a Baer semigroup coordinatisation of bounded modular lattices. Here we use essentially the same idempotents to provide a coordinatisation of bounded distributive lattices. Specifically, we prove that a bounded lattice L is distributive if and only if it can be coordinatised by a Baer semigroup S such that if eS, fS, gSR(S) with eSfS = eSgS then there are idempotents ē, , S such that ēS = eS, S = fS, S = gS and ē commutes with both and .

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1980

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References

1Blyth, T. S.. Baer semigroup coordinatisations of modular lattices. Proc. Roy. Soc. Edinburgh Sect. A, 81 (1978), 4956.CrossRefGoogle Scholar
2Blyth, T. S. and Janowitz, M. F.. Residuation Theory (Oxford: Pergamon, 1972).Google Scholar