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On the group action $\psi: X \times \Bbb R^*_+ \to X$
Today I revisited the concept of a group action with someone. I recalled the definition of a "flow" which is a group action of the additive group of real numbers on the set $X:$
$$\varphi: X ...
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Topological groups vs regular groups [duplicate]
I know group theory and I'm familiar with the concept and definition of Group.
Today I was reading an article about topology and discoverer the concept of "topological group". I read the ...
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