Abstract
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.
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Aubin, J.P., Frankowska, H.: Set-Valued Analysis. Birkhauser, Boston, 1990
Bank, B., Guddat, J., Klatte, D., Kummer, B., Tammer, K.: Non-Linear Parametric Optimization. Birkhauser, Basel-Boston, 1983
Barker, G.P.: Theory of cones. Linear Algebra Appl. 39, 263–291 (1981)
Berge, C.: Espaces Topologiques, Fonctions Multivoques. Dunod, Paris, 1966
Brondsted, A.: An Introduction to Convex Polytopes. Springer-Verlag, New York, 1983
Hiriart-Urruty, J.B.: Projection sur un cone convexe fermé d'un espace euclidien. Décomposition orthogonale de Moreau. Revue de Mathématiques Spéciales, 147–154 (1989)
Ioffe, A.D., Tihomirov, V.M.: Theory of Extremal Problems. North-Holland, Amsterdam, 1979
Iusem, A., Seeger, A.: Measuring the degree of pointedness of a closed convex cone: a metric approach. Mathematische Nachrichten, 2005, to appear
Iusem, A., Seeger, A.: Computing the radius of pointedness of a convex cone. Mathematical Programming, to appear
Moreau, J.J.: Décomposition orthogonale d'un espace hilbertien selon deux cones mutuellement polaires. C. R. Acad. Sci. Paris, t. 255, 238–240 (1962)
Nguyen, M.H., Soltan, V.: Lower bounds for the numbers of antipodal pairs and strictly antipodal pairs of vertices in a convex polytope. Discrete Comput. Geom. 11, 149–162 (1994)
Rockafellar, R.T.: Convex Analysis. Princeton Univ. Press, Princeton, 1970
Rockafellar, R.T., Wets, R.J.: Variational Analysis. Springer-Verlag, Berlin, 1998
Seeger, A.: Eigenvalue analysis of equilibrium processes defined by linear complementarity conditions. Linear Algebra Appl. 292, 1–14 (1999)
Seeger, A., Torki, M.: On eigenvalues induced by a cone constraint. Linear Algebra Appl. 372, 181–206 (2003)
Ziegler, G.M.: Lectures on Polytopes. Springer-Verlag, New York, 1995
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Iusem, A., Seeger, A. On pairs of vectors achieving the maximal angle of a convex cone. Math. Program. 104, 501–523 (2005). https://doi.org/10.1007/s10107-005-0626-z
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DOI: https://doi.org/10.1007/s10107-005-0626-z