On Wed, Nov 24, 2010 at 11:24 AM, PEDRO MANUEL JIMENEZ RODRIGUEZ <
[email protected]> wrote:
>
> Hi Jake,
>
> Sorry I was trying to say less than 1 not 0, but anyway I have negative
> values:
>
Ahah! Your input matrix has negative values, so of course for a symmetric
matrix with negative entries you
can have an output with negative eigenvalues. This makes total sense, and
is expected: what are the
eigenvalues of the matrix: [[-1, 0], [0,1]]? {1, -1} of course.
If you were inputting an asymmetric matrix, and getting singular vectors,
then the singular values will
always be positive, but this is not your current case.
-jake
