# [SciPy-user] Logarithm of the determinant

Nils Wagner nwagner at mecha.uni-stuttgart.de
Thu Jul 14 13:28:34 CDT 2005

Hi all,

The GSL library has a function
gsl_linalg_LU_lndet and gsl_linalg_complex_LU_lndet.

These functions compute the logarithm of the absolute
value of the determinant of a matrix A, \ln|det(A)|, from
its LU decomposition, LU. This function may be useful if
the direct computation of the determinant would overflow
or underflow.

In scipy we have only
det(a, overwrite_a=0)
det(a, overwrite_a=0) -> d

Return determinant of a square matrix.

Is it possible to add the logarithm
of a determinant in scipy ?

Nils