This article lists mathematical identities, that is, identically true relations holding in mathematics.
- Bézout's identity (despite its usual name, it is not, properly speaking, an identity)
 - Binomial inverse theorem
 - Binomial identity
 - Brahmagupta–Fibonacci two-square identity
 - Candido's identity
 - Cassini and Catalan identities
 - Degen's eight-square identity
 - Difference of two squares
 - Euler's four-square identity
 - Euler's identity
 - Fibonacci's identity see Brahmagupta–Fibonacci identity or Cassini and Catalan identities
 - Heine's identity
 - Hermite's identity
 - Lagrange's identity
 - Lagrange's trigonometric identities
 - MacWilliams identity
 - Matrix determinant lemma
 - Newton's identity
 - Parseval's identity
 - Pfister's sixteen-square identity
 - Sherman–Morrison formula
 - Sophie Germain identity
 - Sun's curious identity
 - Sylvester's determinant identity
 - Vandermonde's identity
 - Woodbury matrix identity
 
Identities for classes of functions
- Exterior calculus identities
 - Fibonacci identities: Combinatorial Fibonacci identities and Other Fibonacci identities
 - Hypergeometric function identities
 - List of integrals of logarithmic functions
 - List of topics related to π
 - List of trigonometric identities
 - Logarithmic identities
 - Summation identities
 - Vector calculus identities
 
See also
- List of inequalities
 - List of set identities and relations – Equalities for combinations of sets
 
External links
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