Question: Let K be a 2 2 Gram matrix. Explain why the positive definiteness criterion (3.55) is equivalent to the CauchySchwarz inequality. a > 0,

Let K be a 2 × 2 Gram matrix. Explain why the positive definiteness criterion (3.55) is equivalent to the Cauchy–Schwarz inequality.


a > 0, ac-b0,

a > 0, ac-b0,

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