On the ranks of certain semigroups of order-preserving transformations

Springer Science and Business Media LLC - Tập 45 Số 1 - Trang 272-282 - 1992
Gracinda M. S. Gomes1,2, James Howie1,2
1Departamento de Matemática Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
2Mathematical Institute, University of St. Andrews, U.K.

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Tài liệu tham khảo

Garba, G. U.,Idempotents in partial transformation semigroups, Proc. Royal Soc. Edinburg A116 (1990), 359–366.

Gomes, Gracinda M. S., and John M. Howie,On the ranks of certain finite semigroups of transformations, Math. Proc. Cambridge Phil. Soc.101 (1987), 395–403.

Howie, John M.,Products of idempotents in certain semigroups of transformations, Proc. Edinburgh Math. Soc. (2),17 (1971), 223–236.

Howie, John M., “An introduction to semigroup theory”, Academic Press, 1976.

Howie, John M., and Robert B. McFadden,Idempotent rank in finite full transformation semigroups, Proc. Royal Soc. Edinburg A114 (1990), 161–167.