Determinant


Functions
double	SPUC::det (const mat &X)
	Determinant of real square matrix. Calculate determinant of the real matrix $\mathbf{X}$ .

Function Documentation

double SPUC::det ( const mat & X )

Determinant of real square matrix.
Calculate determinant of the real matrix $\mathbf{X}$ .
Uses LU-factorisation.
$\det(\mathbf{X}) = \det(\mathbf{P}^T \mathbf{L}) \det(\mathbf{U}) = \det(\mathbf{P}^T) \prod(\mathrm{diag}(\mathbf{U}))$
and the determinant of the permuation matrix is $\pm 1$ dependening on the number of row permuations

Generated on Fri Sep 16 11:06:48 2005 for spuc by

1.4.4

Determinant

Functions

Function Documentation