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algebra indec. ce are un ireductibil proiectiv e semisimpla

 
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Dragos Fratila
Newton


Joined: 04 Oct 2007
Posts: 335
Location: Paris

PostPosted: Tue Jan 05, 2010 12:52 am    Post subject: algebra indec. ce are un ireductibil proiectiv e semisimpla Reply with quote

Daca o algebra indecompozabila (adica nu se poate scrie ca produs direct de doua algebre, sau altfel spus 1 este singurul idempotent central nenul), finit dimensionala, are un modul ireductibil care este si proiectiv atunci algebra e semisimpla.
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