abs

Compute the pseudo-derminant of the square matrix x.

Usage

qdet(x)

x

a square matrix

Result

The pseudo-determinant (scalar) of x.

Note: In linear algebra and statistics, the pseudo-determinant is the product of all non-zero eigenvalues of a square matrix. It coincides with the regular determinant when the matrix is non-singular.

See also

abs, absv

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