Ivan Shishkin, Rye (1878)

Problems/Representation theory

Prolongement de caractère

by Pinus halepensis·
50
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Soit GG un groupe fini et H⊂GH\subset G un sous-groupe de GG. Soit χ:H⟶C×\chi: H\longrightarrow \mathbb{C}^{\times} un caractère de HH.

Montrer que l’on peut prolonger χ\chi en un caractère de GG.

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