Speaker:  Jean-Marc Schlenker, visiting Univ. of Ottawa
Title:   Higher Schl\"afli formulas
Time: 4:30 PM, Monday, April 28, 2008
Place:  Malott 205

Abstract:  The Schl\"afli formula is a key identity in hyperbolic geometry which relates the derivative of the volume of a polyhedron to the derivative of its dihedral angles at codimension 2 faces under a deformation. We will describe an extension to similar relations involving first-order variations of the volumes and "angles" at higher codimension faces. A second extension concerns similar relations which are vector-valued, and from whichthe scalar-valued higher Schl\"afli-type formulas follow. (Joint with Rabah Souam.)

April 5, 2008