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Divisibility of binary relations

Published online by Cambridge University Press:  17 April 2009

D.G. Fitz-Gerald
Affiliation:
Monash University, Clayton, Victoria.
G.B. Preston
Affiliation:
Monash University, Clayton, Victoria.
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Abstract

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In his paper in Mat. Sb. (N.S.) 61 (103) (1963), Zareckiĭ associated with any binary relation α an ordered pair, (Lα Mα), say, of lattices and showed that α is a left [right] divisor of β if and only if We provide an alternative proof of this result by embedding the category of relations in the category of sets. Our approach provides a unified treatment of several hitherto independent results, and gives new results for the category of partial transformations.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1971

References

[1]Munn, W.O., “Fundamental inverse semigroups”, Quart. J. Math. Oxford (2) 21 (1970), 157170.CrossRefGoogle Scholar
[2]Preston, G.B., “Embedding any semigroup in a D-simple semigroup”, Trans. Amer. Math. Soc. 93 (1959), 351355.Google Scholar
[3]Reilly, N.R., “Embedding inverse semigroups in bisimple inverse semigroups”, Quart. J. Math. Oxford (2) 16 (1965), 183187.CrossRefGoogle Scholar
[4]Zareckiĭ, K.A., “The semigroup of binary relations” (Russian), Mat. Sb. (N.S.) 61 (103) (1963), 291305.Google Scholar