In mathematics the additive identity of a set which is equipped with the operation of addition is an element which, when added to any element x in the set, yields x. One of the most familiar additive identities is the number 0 from elementary mathematics, but additive identities occur in other mathematical structures where addition is defined, such as in groups and rings.
Read more about Additive Identity: Elementary Examples, Formal Definition, Further Examples
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—Gertrude Stein (1874–1946)
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