TGTS Tetrahedral Geometry/Topology Seminar

Sponsored by Elizabethtown College, Franklin and Marshall College,
Lebanon Valley College, and Millersville University

Speakers 2015-2016

11 September  Mahmoud Zeinalian, Long Island University
 2 October    James Hughes, Elizabethtown College
 6 November   David Futer, Temple University
 4 December   Barbara  Nimershiem, Franklin and Marshall College, and
              Ron Umble, Millersville University
 5 February   Terrance Napier, Lehigh University
 4 March      Thomas Hunter, Swarthmore College     
 1 April      David Lyons, Lebanon Valley College
TGTS is a regional mathematics seminar/colloquium. We meet at 4:30 p.m. on the first Friday of each month during the academic year (with some exceptions, as noted in the schedule above). The public is cordially invited to attend.

Next Talk

    Date: 6 November 2015, 4:30pm
Location: Hempfield High School, Room 213
 Speaker: David Futer, Temple University
   Title: Effective hyperbolic geometry

Abstract. Powerful theorems of Thurston, Perelman, and Mostow
tell us that almost every 3-dimensional manifold admits a hyperbolic
metric, and that this metric is unique. Thus, in principle, there is a
1-to-1 correspondence between a combinatorial description of a
3-manifold and its geometry. The existence of this 1-to-1 correspondence
has been known, at least conjecturally, for over 30 years. On the other
hand, only in the last few years have we begun to see the outlines of a
concrete dictionary between combinatorial features and geometric
measurements. I will survey some of what is known and unknown, paying
special attention to the problem of estimating the volume of a knot
complement in the 3-sphere.

Past Seminars

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