Error estimates for Krylov subspace approximations of matrix exponentials
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The paper develops a better upper estimate of the error for the Krylov subspace approximations to the exponential of a large matrix than that given by Gallopoulos and Saad (1992). This approach is based on Chebyshev series approximation.
author list (cited authors)
Stewart, D. E., & Leyk, T. S.