Why every semisimple ring has the double centralizer property? Namely, let $R$ be a semisimple ring. We consider $R$ as left $R$-module. Let $E=End(R)$. Why every element in $End(R_E)$ is induced by left multiplication?
2026-04-07 09:38:21.1775554701
Double centralizer theorem for semisimple rings
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