Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-13T09:58:16.474Z Has data issue: false hasContentIssue false

Some covering theorems for locally inverse semigroups

Part of: Semigroups

Published online by Cambridge University Press:  09 April 2009

D. B. McAlister
Affiliation:
Department of Mathematical SciencesNorthern Illinois UniversityDeKalb, Illinois 60115, U.S.A.
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A regular semigroup S is said to be locally inverse if each local submonoid eSe, with e an idempotent, is an inverse semigroup. In this paper we apply known covering theorems for inverse semigroups and a covering theorem for locally inverse semigroups due to the author to obtain some covering theorems for locally inverse semigroups. The techniques developed here permit us to give an alternative proof for, and sligbt strengthening of, an important covering theorem for locally inverse semigroups due to F. Pastijn.

MSC classification

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1985

References

[1]Chen, S. Y. and Hseih, S. C., ‘Factonzable inverse semigroups’, Semigroup Forum 8 (1974), 283297.CrossRefGoogle Scholar
[2]Coudron, A., ‘Sur les extensions de demigroupes reciproques’, Bull. Soc. Roy. Sci. Liege 37 (1968), 409419.Google Scholar
[3]D'Alarcao, H., ‘Idempotent separating extensions of inverse semigroups’, J. Austral. Math. Soc. 9 (1969), 211217.CrossRefGoogle Scholar
[4]Hall, T. E., “On regular semigroups”, J. Algebra 24 (1973), 124.CrossRefGoogle Scholar
[5]Hall, T. E., “Some properties of local subsemigroups inherited by larger subsemigroups”, Semigroup Forum 25 (1982), 3548.CrossRefGoogle Scholar
[6]Hall, T. E. and Jones, P. R., “On the lattice of varieties of bands of groups”, Pacific J. Math. 91 (1980), 327337.CrossRefGoogle Scholar
[7]McAlister, D. B., “Groups, semilattices and inverse semigroups, I”, Trans. Amer. Math. Soc. 192 (1974), 227244.Google Scholar
[8]McAlister, D. B., “Groups, semilattices and inverse semigroups, II”, Trans. Amer. Math. Soc. 196 (1974), 351370.CrossRefGoogle Scholar
[9]McAlister, D. B., “Some covering and embedding theorems for inverse semigroups”, J. Austral. Math. Soc. 22A (1976), 188211.CrossRefGoogle Scholar
[10]McAlister, D. B., “Rees matrix covers for locally inverse semigroups”, Trans. Amer. Math. Soc. 277 (1983), 727738.CrossRefGoogle Scholar
[11]McAlister, D. B. and McFadden, R. B., “Regular semigroups with an inverse transversal as matrix semigroups”, submitted to Quart. J. Math. Oxford.Google Scholar
[12]Nambooripad, K. S. S., “The structure of regular semigroups, I”, Memoirs of the Amer. Math. Soc. 224 (1979).Google Scholar
[13]Nambooripad, K. S. S., “The natural partial order on a regular semigroup”, Proc. Edinburgh Math. Soc. (2) 23 (1980), 249260.CrossRefGoogle Scholar
[14]Namboorpiad, K. S. S. and Veramony, R., “Subdirect products of regular semigroups”, Semigroup Forum 27 (1983), 265308.CrossRefGoogle Scholar
[15]Pastijn, F., “Rectangular bands of inverse semigroups”, Simon Stevin 56 (1982), 395.Google Scholar
[16]Pastijn, F., “The structure of pseudo-inverse semigroups”, Trans. Amer. Math. Soc. 273 (1982), 631655.CrossRefGoogle Scholar
[17]Reilly, N. R. and Munn, W. D., “E-unitary congruences on inverse semigroups”, Glasgow Math. J. 17 (1976), 5775.CrossRefGoogle Scholar