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136 views
The centralizer of every semiregular group is transitive.
How to proof this subject?
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2answers
227 views
On a property of subsemigroups
Let $H$ denote a subsemigroup of a semigroup $G$.
I'm interested in the following property:
$$\forall g\in G\exists h\in H:gh\in H.$$
This property is weaker than the property …
