# [PYTHON MATRIX-SIG] Singular Values

**Andrew P. Mullhaupt
**
amullhau@ix.netcom.com

*Wed, 04 Jun 1997 20:18:07 -0400*

At 12:35 PM 6/4/97 +0200, Konrad Hinsen wrote:
>*The convention with respect to SVD is to return U, S, W^T, because
*>*the product of these matrices is the original matrix. Matlab, for
*>*example, does the same.
*
This isn't really that much of a convention as a concession to
languages such as C and Fortran which do not easily do the transpose.
S, for example returns V, not V^T, as do some APL versions.
The U and V matrices are normally formed by accumulating elementary
orthogonal transformations, and it is just as easy to form the matrices
or their transposes.
Later,
Andrew Mullhaupt
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