Chris is speaking in the Max Dehn Seminar at the University of Utah, which will take place on Wednesday, March 7, at 3:15 in LCB 219.
Dave is speaking in the BYU Topology Seminar, which will take place on Thursday, March 8, at 1:00 PM in the TCMB lounge.
Title: Small volume link orbifolds
Abstract: We will discuss recent investigations of small volume hyperbolic 3-orbifolds whose singular locus is a link. An orbifold of this type naturally arises as the quotient of a 3-manifold under a (nice) group action. Thus, lower bounds on the volume of these orbifolds lead to relations between the volume of a 3-manifold and the size of its symmetry group.
In the special case where the singular locus is a knot in the 3-sphere, we identify the smallest volume example. We will also describe more general results on lower volume bounds for hyperbolic 3-orbifolds with singular locus a link and identify the smallest volume example in certain cases.