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Revision as of 12:51, 16 August 2002 by Valhalla (talk | contribs) (added contest)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)In mathematics, expecially algebra, One is a catch all term denoting the multiplicative identity element of a ring. If a ring is recognized as a set of numbers, its multiplicative identity can be referred to as the number one.