PositiveDefiniteMatrixQ

PositiveDefiniteMatrixQ[m] gives True if m is explicitly positive definite, and False otherwise.

Examples

Test for positive definite:

PositiveDefiniteMatrixQ[{{2, -1}, {-1, 2}}]
(* True *)

Not positive definite:

PositiveDefiniteMatrixQ[{{1, 2}, {2, 1}}]
(* False *)

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