KnowraQuadratic formLinked fromLinked fromThe 25 pages that link to Quadratic form, each with the reason it gives.All 25Broader topic 1Related 16Narrower topic 8Positive-definite matrixNarrower topic: The defining condition tests whether this expression stays positive away from zero.Sylvester's law of inertiaNarrower topic: The law classifies the signs of a quadratic form after diagonalization.Jacobi's four-square theoremNarrower topic: Four-square representations are values of a particular quadratic form.Hasse–Minkowski theoremNarrower topic: The theorem applies to these forms over number fields.Legendre's three-square theoremNarrower topic: Representing an integer by three squares is a special case of representing values by a quadratic form.Markov numberNarrower topic: The historical problem involved minima of indefinite binary quadratic forms.Cartan–Dieudonné theoremNarrower topic: Its associated geometry determines which transformations count as isometries and reflections.Cochran's theoremNarrower topic: The theorem’s random variables are quadratic forms in a normal vector.