A unified version of Cauchy–Schwarz and
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Zi-zong Yan
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Article
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2008
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Elsevier Science
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English
⚖ 99 KB
Let A be an n × n positive definite symmetric real matrix with n eigenvalues λ 1 , λ 2 , . . . , λ n and let x and y be two n × 1 vectors with the angle ψ. This paper proves the following inequality (x T Ax)(y T Ay).