Abstract
This survey aims to give an overview of several substantial developments of the last 50 years in the structure theory of regular semigroups and to shed light on their impact on other parts of semigroup theory.
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References
Auinger, K.: On Existence Varieties of Regular Semigroups, Semigroups, Algorithms, Automata and Languages (Coimbra, 2001), pp. 65–89. World Sci. Publ, River Edge (2002)
Auinger, K., Oliveira, L.: On the variety of strict pseudosemilattices. Stud. Sci. Math. Hung. 50, 207–241 (2013)
Billhardt, B.: On embeddability into a semidirect product of a band by a group. J. Algebra 206, 40–50 (1998)
Billhardt, B., Szendrei, M.B.: Weakly \(E\)-unitary locally inverse semigroups. J. Algebra 267, 559–576 (2003)
Billhardt, B., Szittyai, I.: On embedabbility of idempotent separating extensions of inverse semigroups. Semigroup Forum 61, 26–31 (2000)
Brittenham, M., Margolis, S.W., Meakin, J.: Subgroups of the free idempotent generated semigroups need not be free. J. Algebra 321, 3026–3042 (2009)
Broeksteeg, R.: The set of idempotents of a completely regular semigroup as a binary algebra. Bull. Austral. Math. Soc. 50, 91–107 (1994)
Clifford, A.H.: The fundamental representation of a regular semigroup. Semigroup Forum 10, 84–92 (1975)
Clifford, A.H.: The fundamental representation of a completely regular semigroup. Semigroup Forum 12, 341–346 (1976)
Dékány, T., Szendrei, M.B., Szittyai, I.: \(E\)-solid locally inverse semigroups, Acta Sci. Math. accepted
Dolinka, I., Gray, R.D., Ruškuc, N.: On regularity and the word problem for free idempotent generated semigroups. Proc. Lond. Math. Soc. (3) 114, 401–432 (2017)
Dolinka, I., Ruškuc, N.: Every group is a maximal subgroup of the free idempotent generated semigroup over a band. Int. J. Algebra Comput. 23, 573–581 (2013)
Easdown, D.: Biordered sets of bands. Semigroup Forum 29, 241–246 (1984)
Easdown, D.: Biordered sets of eventually regular semigroups. Proc. Lond. Math. Soc. (3) 49, 483–503 (1984)
Easdown, D.: Biordered sets come from semigroups. J. Algebra 96, 581–591 (1985)
Easdown, D.: Biorder-preserving coextensions of fundamental semigroups. Proc. Edinb. Math. Soc. 31, 463–467 (1988)
Easdown, D., Hall, T.E.: Reconstructing some idempotent-generated semigroups from their biordered sets. Semigroup Forum 29, 207–216 (1984)
Easdown, D., Jordan, P., Roberts, B.: Biordered sets and fundamental semigroups. Semigroup Forum 81, 85–101 (2010)
Edwards, P.M.: Eventually regular semigroups. Bull. Aust. Math. Soc. 28, 23–38 (1983)
Edwards, P.M.: Fundamental semigroups. Proc. R. Soc. Edinb. Sect. A 99, 313–317 (1985)
Fountain, J., Pin, J.-E., Weil, P.: Covers for monoids. J. Algebra 271, 529–586 (2004)
Gould, V.: Notes on restriction semigroups and related structures; formerly (Weakly) left \(E\)-ample semigroups. http://www-users.york.ac.uk/~varg1/restriction.pdf
Gould, V., Yang, D.: Every group is a maximal subgroup of a naturally occurring free idempotent generated semigroup. Semigroup Forum 89, 125–134 (2014)
Gray, R., Ruskuc, N.: On maximal subgroups of free idempotent generated semigroups. Isr. J. Math. 189, 147–176 (2012)
Grillet, P.A.: The structure of regular semigroups. I. A representation. Semigroup Forum 8, 177–183 (1974)
Grillet, P.A.: The structure of regular semigroups. II. Cross-connections. Semigroup Forum 8, 254–259 (1974)
Grillet, P.A.: The structure of regular semigroups. III. The reduced case. Semigroup Forum 8, 260–265 (1974)
Grillet, P.A.: The structure of regular semigroups. IV. The general case. Semigroup Forum 8, 368–373 (1974)
Grillet, P.A.: Semigroups. An Introduction to the Structure Theory. Monographs and Textbooks in Pure and Applied Mathematics, vol. 193. Marcel Dekker Inc., New York (1995)
Hall, T.E.: On orthodox semigroups and uniform and antiuniform bands. J. Algebra 16, 204–217 (1970)
Hall, T.E.: On regular semigroups. J. Algebra 24, 1–24 (1973)
Hartmann, M.: Almost factorizable orthodox semigroups. Semigroup Forum 74, 106–124 (2007)
Hartmann, M., Szendrei, M.B.: \(E\)-unitary almost factorizable orthodox semigroups. Semigroup Forum 84, 157–175 (2012)
Howie, J.M.: An Introduction to Semigroup Theory. L.M.S. Monographs, vol. 7. Academic Press, London-New York (1976)
Howie, J.M.: Fundamentals of Semigroup Theory. London Mathematical Society Monographs, New Series, vol. 12. The Clarendon Press, New York (1995)
Jones, P.R.: An introduction to existence varieties of regular semigroups. Southeast Asian Bull. Math. 19, 107–118 (1995)
Kad’ourek, J.: On some existence varieties of locally inverse semigroups. Int. J. Algebra Comput. 6, 761–788 (1996)
Lawson, M.V.: Inverse Semigroups. The Theory of Partial Symmetries. World Sci. Publishing Co., Inc, River Edge (1998)
McAlister, D.B.: Rees matrix covers for locally inverse semigroups. Trans. Am. Math. Soc. 277, 727–738 (1983)
McAlister, D.B.: Rees matrix covers for regular semigroups. J. Algebra 89, 264–279 (1984)
McElwee, B.: Subgroups of the free semigroup on a biordered set in which principal ideals are singletons. Commun. Algebra 30, 5513–5519 (2002)
Meakin, J.: The structure mappings on a regular semigroup. Proc. Edinb. Math. Soc. 21, 135–142 (1978)
Meakin, J.: The free local semilattice on a set. J. Pure Appl. Algebra 27, 263–275 (1983)
Muhammed, P.A.A., Volkov, M.V.: Inductive groupoids and cross-connections of regular semigroups. Acta Math. Hung. 157, 80–120 (2019)
Muhammed, P.A.A., Volkov, M.V.: The tale of two categories: inductive groupoids and cross-connections. arXiv:1901.05731v2, (2019)
Nambooripad, K.S.S.: Structure of regular semigroups. PhD thesis, University of Kerala (India) (1973)
Nambooripad, K.S.S.: Structure of regular semigroups. I. Fundamental regular semigroups. Semigroup Forum 9, 354–363 (1975)
Nambooripad, K.S.S.: Structure of regular semigroups. II. The general case. Semigroup Forum 9, 364–371 (1975)
Nambooripad, K.S.S.: Structure of Regular Semigroups. I, vol. 22(224). American Mathematical Society, Providence (1979)
Nambooripad, K.S.S.: Pseudosemilattices and biordered sets. I. Simon Stevin 55, 103–110 (1981)
Nambooripad, K.S.S.: Structure of Regular Semigroups II. Cross-Connections, vol. 15. Centre for Mathematical Sciences, Trivandrum (1989)
Nambooripad, K.S.S.: Theory of Cross-Connections, vol. 28. Centre for Mathematical Sciences, Trivandrum (1994)
Nambooripad, K.S.S.: Theory of Regular Semigroups. Sayahna Foundation, Thiruvananthapuram (2018)
Nambooripad, K.S.S., Pastijn, F.: Subgroups of free idempotent generated regular semigroups. Semigroup Forum 21, 1–7 (1980)
Pastijn, F.: The structure of pseudo-inverse semigroups. Trans. Am. Math. Soc. 273, 631–655 (1982)
Pastijn, F., Petrich, M.: Straight locally inverse semigroups. Proc. Lond. Math. Soc. (3) 49, 307–328 (1984)
Pastijn, F., Petrich, M.: Regular Semigroups as Extensions. Research Notes in Mathematics, vol. 136. Pitman, Boston (1985)
Petrich, M.: Inverse Semigroups. Pure and Applied Mathematics (New York). Wiley, New York (1984)
Petrich, M., Reilly, N.R.: Completely Regular Semigroups. Canadian Mathematical Society Series of Monographs and Advanced Texts, vol. 23. Wiley, New York (1999)
Šaĭn, B.M.: On the theory of generalized groups and generalized heaps (Russian) theory of Semigroups and Appl. I (Russian), 286–324, Izdat. Saratov. Univ., Saratov, (1965); translation in: Schein, B.M.: On the theory of inverse semigroups and generalized grouds, American Mathematical Society Translations (2) 113, 89–122 (1979)
Szendrei, M.B.: Extensions of regular orthogroups by groups. J. Aust. Math. Soc. Ser. A 59, 28–60 (1995)
Szendrei, M.B.: Almost factorizable locally inverse semigroups. Int. J. Algebra Comput. 21, 1037–1052 (2011)
Trotter, P.G.: Congruence extensions in regular semigroups. J. Algebra 137, 166–179 (1991)
Trotter, P.G.: Covers for regular semigroups and an application to complexity. J. Pure Appl. Algebra 105, 319–328 (1995)
Trotter, P.G.: e-Varieties of Regular Semigroups, Semigroups, Automata and Languages (Porto, 1994), pp. 247–262. World Sci. Publ., River Edge (1996)
Veeramony, R.: Proper pseudo-inverse semigroups. Simon Stevin 58, 65–86 (1984)
Wang, Y.: Beyond regular semigroups. Semigroup Forum 92, 414–448 (2016)
Yamada, M.: On a certain class of regular semigroups. In: Proceedings of the Symposium of Regular Semigroups (DeKalb), pp. 146–179 (1979)
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Communicated by László Márki.
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M. B. Szendrei was partially supported by the National Research, Development and Innovation Office, Grants K115518 and K128042.
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Szendrei, M.B. Structure theory of regular semigroups. Semigroup Forum 100, 119–140 (2020). https://doi.org/10.1007/s00233-019-10055-8
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DOI: https://doi.org/10.1007/s00233-019-10055-8