The Identity (mathematics) reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Identity (mathematics)

In mathematics, an identity is an equality that remains true regardless of the values of any variables that appear within it.

Identities for classes of functions

• Logarithmic identities
• Exponential identities
• Trigonometric identities
• Hyperbolic function identities
• Hypergeometric function identities
• Combinatorial identities

Named identities

• Bézout's identity
• Euler's identity

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