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Various regularities for semigroups of transformations on a finite set determined by a zig-zag order
Publikováno v:
Asian-European Journal of Mathematics. 15
Consider a finite ordered set [Formula: see text] with a zig-zag order. In this paper, we consider the semigroup [Formula: see text] of all compressing-preserving transformations on [Formula: see text]. Necessary and sufficient conditions for [Formul