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DTSTART;VALUE=DATE:20180320T171500
DTEND;VALUE=DATE:20180320T171500
UID:5777@agenda.unifr.ch
DESCRIPTION:Steiner asked in 1832 what are the combinatorial types of convex polyhedra with their vertices on a quadric in 3-dimensional projective space. We will describe two recent advances on this problem.\nOne result (joint with Jeff Danciger and Sara Maloni) describes the combinatorial types of polyhedra inscribed in a one-sheeted hyperboloid or cylinder, while the other (joint with Hao Chen) deals with polyhedra having their vertices on a sphere in projective space which are not\ncontained in the ball.\nThe first result is based on anti-de Sitter geometry, while the second uses a natural extension of the hyperbolic space by the de Sitter space.
SUMMARY:Prof. Jean-Marc Schlenker (Luxembourg): Polyhedra inscribed in quadrics
CATEGORIES:Colloque / Congrès / Forum
LOCATION:PER 08\, Phys 2.52\, Chemin du Musée 3\, 1700 Fribourg
URL;VALUE=URI:https://agenda.unifr.ch/e/fr/5777
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