TGTS Tetrahedral Geometry/Topology Seminar

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

Speakers 2016-17

  16 September: Ziva Myer, Bryn Mawr College
  14 October:   Vince Coll, Lehigh University
  4 November:   Carl Droms, James Madison University
  2 December:   Evan Folkestad, Franklin and Marshall College
  3 Feburary:   Sarah Rody, Drexel University
  10 March:     Hannah Schwartz, Bryn Mawr College
  7 April:      Eamonn Tweedy, Widener University
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: 7 April 2017, 4:30pm
Location: Hempfield High School, Room 213
 Speaker: Eamonn Tweedy, Widener University
 Title: Some invariants of Seifert fibered homology spheres (and of their fibers)

 Abstract. Seifert fibered spaces (circle bundles over
2-dimensional orbifolds) provide an important playground of 3-manifolds
for low-dimensional topologists, and are often used as test cases for
conjectures.  The also often arise in "nature": as branched double
covers of Montesinos knots, as Dehn surgeries on torus knots, and in
other settings.  This talk, based on joint work with Tye Lidman, will
focus on Seifert fibered homology spheres.  We use several 3-manifold
invariants and knot invariants to shed some light on the homology
cobordism types of Seifert fibered homology spheres, as well as the
concordance classes of their fibers.

Past Seminars

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