On conditions for the Brandt semigroup to be non isomorphic to the variant.
Słowa kluczowe:
Brandt semigroup, variant, sandwich semigroup, bicyclic semigroupAbstrakt
On conditions for the Brandt semigroup to be non isomorphic to the variant.Bibliografia
J. Hickey, Semigroups under a sandwich operation. // Proc. Edinburg Math. Soc. (2) 26(3) (1983), 371–382.
O. Andersen, The abstract semigroup structure, PhD Thesis, Hamburg, 1952 (in German).
A. Clifford , G. Preston, The Algebraic Theory of Semigroups Volume 1, American Mathematical Society, Providence, 1961 (1977).
