Difference between revisions of "Multiplicative identity"
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Latest revision as of 04:21, November 11, 2011
The multiplicative identity for a ring or field is the element, i, of the set that, when multiplied by any element a in the set yields an answer of a. In the integers, rational numbers, and real numbers, the multiplicative identity is 1.
For any number a: a x 1 = a and 1 x a = a.