Show that if || || is any natural norm, then (||A1||)1 || ||A|| for

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Show that if || · || is any natural norm, then (||A−1||)−1 ≤ |λ| ≤ ||A|| for any eigenvalue λ of the nonsingular matrix A.
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Numerical Analysis

ISBN: 978-0538733519

9th edition

Authors: Richard L. Burden, J. Douglas Faires

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