Let A be an m x n matrix. (a) Explain why the product L = AAT is

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Let A be an m x n matrix.
(a) Explain why the product L = AAT is a Gram matrix.
(b) Show that, even though they may be of different sizes, both Gram matrices K = ATA and L = AAT have the same rank.
(c) Under what conditions are both K and L positive definite?
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Applied Linear Algebra

ISBN: 978-0131473829

1st edition

Authors: Peter J. Olver, Cheri Shakiban

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