External analysis of boundary points of convex sets: illumination and~visibility

• Autores: José Pedro Moreno Díaz , Alberto Seeger
• Localización: Mathematica scandinavica, ISSN 0025-5521, Vol. 105, Nº 2, 2009, págs. 265-286
• Idioma: inglés
• DOI: 10.7146/math.scand.a-15118
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• Resumen

  • The purpose of this work is studying the geometry of the boundary ∂K of a solid closed convex set K in a normed space. In a recent paper of ours, such a study has been carried out with the help of supporting cones and drops. Now, illuminated sets and visible sets are the main tools of analysis.