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## Main Question or Discussion Point

I am using arpack (the dsdrv1 driver) to iteratively solve the eigenvalue problem

Ax = λx

I am interested in the first m eigenvectors, and I have very good initial approximations for these vectors, so I would like to use my m starting vectors as an initial guess. However, arpack only seems to allow me to use one starting vector, which is fine if I only want one eigenvector, but doesn't help if I want more than one.

Does anyone know if arpack will let me use my m initial guesses as starting vectors?

Ax = λx

I am interested in the first m eigenvectors, and I have very good initial approximations for these vectors, so I would like to use my m starting vectors as an initial guess. However, arpack only seems to allow me to use one starting vector, which is fine if I only want one eigenvector, but doesn't help if I want more than one.

Does anyone know if arpack will let me use my m initial guesses as starting vectors?