Difference between revisions of "Ring (mathematics)"
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Revision as of 06:43, February 22, 2007
A ring in mathematics is a set of numbers closed under addition and multiplication where addition is commutative, both operations are associative, multiplication distributes over addition, there is an additive identity and additive inverses.
Other defintions
Depending on the specific context, some elements of this definition may be somewhat different. For example, some authors include in the defintion that there exists a multiplicative identity.