On Congruence Permutable $G$-sets

Attila Nagy

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arXiv · 1801.04551

On Congruence Permutable $G$-sets

Attila Nagy

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Abstract

An algebraic structure is said to be congruence permutable if its arbitrary congruences $\alpha$ and $\beta$ satisfy the equation $\alpha \circ \beta =\beta \circ \alpha$, where $\circ$ denotes the usual composition of binary relations. For an arbitrary $G$-set $X$ with $G\cap X=\emptyset$, we define a semigroup $(G,X,0)$ with a zero $0$ ($0\notin G\cup X$), and give necessary and sufficient conditions for the congruence permutability of the $G$-set $X$ by the help of the semigroup $(G,X,0)$.

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Attila Nagy. 2018-01-14. On Congruence Permutable $G$-sets. https://arxiv.org/abs/1801.04551

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