What is the best way to solve A\B where A and B are sparse, and where the result is also known to be sparse? Right now it seems I have to do sparse(A \ Matrix(B)).
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Beware that the inverse is rarely sparse. But in cases where it is, see SparseSparse for inverting structured sparse matrices
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I am aware. For this particular problem type, it is. The problem starts relatively sparse for small sizes, but sparsity increases quickly as the problem size grows. Thanks for the reference.