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Domain (Ring theory)

From AoPSWiki

A ring, R, is an domain if:

  • 0\neq 1 (where 0 and 1 are the additive and multiplicative identities, respectively)
  • and it contains no zero divisors (i.e. there are no nonzero x,y\in R such that xy = 0).

If R is also commutative, than it is an integral domain.

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