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UID:20260608T222028EDT-4628pkwkIN@132.216.98.100
DTSTAMP:20260609T022028Z
DESCRIPTION:Title: Non-Obtuse Dissection of Tetrahedra.\n\nIn the plane any
  obtuse triangle can be dissected into 2 right-angled triangles by drawing
  the altitude from the obtuse vertex on its opposite side. The problem gen
 eralises naturally to higher dimensions\, where we consider a simplex to b
 e non-obtuse provided no angle between two co-dimension 1 faces is obtuse.
  The problem at hand is then stated in an open conjecture due to Hadwiger 
 (1956): can every d-simplex be dissected into non-obtuse d-simplices? We p
 rovide a constructive answer to this interesting puzzle in dimension 3\, w
 here we show that\n\n28 orthoschemes are sufficient to dissect any tetrahe
 dron.\n
DTSTART:20180919T190000Z
DTEND:20180919T200000Z
LOCATION:Room 1104\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue
  Sherbrooke Ouest
SUMMARY:Florestan Brunck (McGill University)
URL:https://www.mcgill.ca/channels/channels/event/florestan-brunck-mcgill-u
 niversity-289701
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