In mathematics, positive definiteness is a property of any object to which a bilinear form or a sesquilinear form may be naturally associated, which is positive-definite. See, in particular:
Positive-definite bilinear form Positive-definite function Positive-definite function on a group Positive-definite functional Positive-definite kernel Positive-definite matrix Positive-definite operator Positive-definite quadratic form
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