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linalg[definite] - test for positive or negative definite matrices
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Calling Sequence
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definite(A, kind)
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Parameters
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A
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square symmetric matrix
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kind
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one of the following symbols: 'positive_def', 'positive_semidef', 'negative_def', or 'negative_semidef'
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Description
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For numerical matrices, definite returns true if the matrix has the property specified by the parameter kind. The properties are positive definite, positive semidefinite, negative definite, or negative semidefinite.
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For matrices with non-numerical entries, definite returns a conjunction of Boolean expressions, all of which must be true if the matrix is to have the property specified by the parameter kind.
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The command with(linalg,definite) allows the use of the abbreviated form of this command.
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