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Jul 7, 2010 at 12:51 comment added Klim Efremenko I am sorry I did not follow: "The idempotents for this decomposition project onto the corresponding representations above" Can you, please, explain it? I do understand how the ring R looks like, but I do not understand how to deduce from it irreducible represintations of $C^X$.
Jul 6, 2010 at 6:10 vote accept Klim Efremenko
Jul 7, 2010 at 11:46
Jul 5, 2010 at 13:14 history answered David E Speyer CC BY-SA 2.5