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G0121 : Matrix not positive definite [procsline 140]

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This error means that on line 140 of the file named procs, your program is passing a matrix that is not positive definite to a GAUSS function that requires a positive definite matrix.

This most commonly occurs when a program passes a matrix that is not positive definite to the GAUSS function invpd. invpd calculates the inverse of a positive definite matrix.

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