Antipodal pairs, critical pairs, and Nash angular equilibria in convex cones
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A Variational Approach to Copositive Matrices
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Journal of Global Optimization
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In this paper we explore the concept of antipodality relative to a closed convex cone **. The problem under consideration is that of finding a pair of unit vectors in K achieving the maximal angle of the cone. We mention also a few words on the attainability of critical angles. By way of application of the general theory, we briefly discuss the problem of estimating the radius of pointedness of a cone.