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Resumen de New characterizations of Von Neumann regular rings and a conjecture of Shamsuddin

Carl Faith

  • A theorem of Utumi states that if $R$ is a right self-injective ring such that every maximal ideal has nonzero annihilator, then $R$ modulo the Jacobson radical $J$ is a finite product of simple rings and is a von Neuman regular ring. We prove two theorems and a conjecture of Shamsuddin that characterize when $R$ itself is a von Neumann ring, using a splitting theorem of the author on when the maximal regular ideal of a ring splits off.


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