Skip to Main Content

Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

What is MCQ? The Mathematical Citation Quotient (MCQ) measures journal impact by looking at citations over a five-year period. Subscribers to MathSciNet may click through for more detailed information.

 

The determination of all varieties consisting of absolutely closed semigroups
HTML articles powered by AMS MathViewer

by P. M. Higgins PDF
Proc. Amer. Math. Soc. 87 (1983), 419-421 Request permission

Abstract:

An example is given of a right normal band that is not absolutely closed. This enables us to determine all varieties of semigroups that consist entirely of absolutely closed semigroups.
References
    A. H. Clifford and G. B. Preston, The algebraic theory of semigroups, Math. Surveys, No. 7, Amer. Math. Soc., Providence, R.I., Vol. I, 1961; Vol. II, 1967.
  • T. E. Hall, Epimorphisms and dominions, Semigroup Forum 24 (1982), no. 2-3, 271–283. MR 650576, DOI 10.1007/BF02572773
  • J. M. Howie, An introduction to semigroup theory, L. M. S. Monographs, No. 7, Academic Press [Harcourt Brace Jovanovich, Publishers], London-New York, 1976. MR 0466355
  • John R. Isbell, Epimorphisms and dominions, Proc. Conf. Categorical Algebra (La Jolla, Calif., 1965) Springer, New York, 1966, pp. 232–246. MR 0209202
  • John R. Isbell, Epimorphisms and dominions, Proc. Conf. Categorical Algebra (La Jolla, Calif., 1965) Springer, New York, 1966, pp. 232–246. MR 0209202
Similar Articles
  • Retrieve articles in Proceedings of the American Mathematical Society with MSC: 20M07
  • Retrieve articles in all journals with MSC: 20M07
Additional Information
  • © Copyright 1983 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 87 (1983), 419-421
  • MSC: Primary 20M07
  • DOI: https://doi.org/10.1090/S0002-9939-1983-0684630-8
  • MathSciNet review: 684630