Classification of L-cross-sections of the finite symmetric semigroup up to isomorphism
Eugenija Bondar · The scientific electronic library of periodicals of the National Academy of Sciences of Ukraine (National Academy of Sciences of Ukraine) · 2016
Let Tn be the symmetric semigroup of full transformations on a finite set with n elements. In the paper we give a counting formula for the number of L-cross-sections of Tn and classify all L-cross-sections of Tn up to isomorphism.