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| rev | Bot | (Created page with "<div class="d-none"><math> \newcommand{\mathds}{\mathbb}</math></div>Given a finite group <math>G</math>, setting <math>A=C(G)</math>, prove that the maps <math display="block"> \Delta:A\to A\otimes A </math> <math display="block"> \varepsilon:A\to\mathbb C </math> <math display="block"> S:A\to A </math> which are transpose to the multiplication <math>m:G\times G\to G</math>, unit <math>u:\{.\}\to G</math> and inverse map <math>i:G\to G</math>, are subject to the fol...") | Apr 20'25 at 1:32 | +761 |