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arXiv · 1407.2800

Angles, triangle inequalities, correlation matrices and metric-preserving and subadditive functions

Diego Castano·Vehbi E. Paksoy·Fuzhen Zhang
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Abstract

We study the triangle inequalities for angles (with different definitions) and present inequalities concerning the entries of correlation matrices through the positivity of $3\times 3$ matrices. We extend our discussions to the inequalities concerning the triangle triplets with metric-preserving and subadditive functions.

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Diego Castano, Vehbi E. Paksoy, Fuzhen Zhang. 2014-07-10. Angles, triangle inequalities, correlation matrices and metric-preserving and subadditive functions. https://arxiv.org/abs/1407.2800

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