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arXiv · 1303.4606

Characterizing semigroups $X$ with commutative extensions $\varphi(X)$, $\lambda(X)$, $N_2(X)$, $\upsilon(X)$

Taras Banakh·Volodymyr Gavrylkiv
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Abstract

We characterize semigroups $X$ whose semigroups of filters $\varphi(X)$, maximal linked systems $\lambda(X)$, linked upfamilies $N_2(X)$, and upfamilies $\upsilon(X)$ are commutative.

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Taras Banakh, Volodymyr Gavrylkiv. 2013-03-19. Characterizing semigroups $X$ with commutative extensions $\varphi(X)$, $\lambda(X)$, $N_2(X)$, $\upsilon(X)$. https://arxiv.org/abs/1303.4606

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