In mathematics, positive semidefinite may refer to:
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Positive semidefinite function
In mathematics, a positive-definite function is, depending on the context, either of two types of function (mathematics), function.
Most common usage
A ''positive-definite function'' of a real number, real variable ''x'' is a complex number, com ...
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Positive semidefinite matrix
In mathematics, a symmetric matrix M with real entries is positive-definite if the real number z^\textsfMz is positive for every nonzero real column vector z, where z^\textsf is the transpose of More generally, a Hermitian matrix (that is, a co ...
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Positive semidefinite quadratic form
Positive is a property of positivity and may refer to:
Mathematics and science
* Positive formula, a logical formula not containing negation
* Positive number, a number that is greater than 0
* Plus sign, the sign "+" used to indicate a posit ...
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Positive semidefinite bilinear form
{{Mathdab