Some results on semigroups of transformations with restricted range

Yan, QF; Wang, SF

Wang, SF (corresponding author), Yunnan Normal Univ, Dept Math, Kunming 650500, Yunnan, Peoples R China.

OPEN MATHEMATICS, 2021; 19 (): 69

Abstract

Let X be a non-empty set andY a non-empty subset of X. Denote the full transformation semigroup on X byT(X) and write f (X) = {f (x)vertical bar x eps......

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