[SciPy-user] Sparse linear equation solver

[Nils Wagner]

Hi all,

How do I solve large sparse systems of equations in scipy.
Assume that the coefficient matrix is given in MatrixMarket format.

Which package is currently used in scipy (Super-LU, UMFPACK) ?

How do I multiply a sparse matrix with a vector ?

Can I use complex matrices ?

How do I generate a bordered matrix in sparse format
e.g. [A , x; x^H , 0]
 
A small example would be appreciated.

Nils