# scipy.linalg.interpolative.estimate_spectral_norm_diff¶

scipy.linalg.interpolative.estimate_spectral_norm_diff(A, B, its=20)[source]

Estimate spectral norm of the difference of two matrices by the randomized power method.

Parameters: First matrix given as a scipy.sparse.linalg.LinearOperator with the matvec and rmatvec methods (to apply the matrix and its adjoint). Second matrix given as a scipy.sparse.linalg.LinearOperator with the matvec and rmatvec methods (to apply the matrix and its adjoint). its : int, optional Number of power method iterations. float Spectral norm estimate of matrix difference.

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