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Identity (mathematics)
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Equation that is satisfied for all values of the variables
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In mathematics, an identity is an equality relating one mathematical expression A to another mathematical expression B, such that A and B (which might contain some variables) produce the same value for all values of the variables within a certain domain of discourse. In other words, A = B is an identity if A and B define the same functions, and...

Subclass of
Equality (mathematics)
Theorem
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