Location: MSCS 428 Date and Time: Wednesday, April 12, 2017 - 3:30pm to 4:30pm Henry Segerman (Oklahoma State University) Connectivity of the set of triangulations of a 3- or 4-manifold Abstract: This is joint work with Hyam Rubinstein. Matveev and Piergallini independently show that the set of triangulations of a three-manifold is connected under 2-3 and 3-2 Pachner moves, excepting triangulations with only one tetrahedron. We give a more direct proof of their result which (in work in progress) allows us to extend the result to triangulations of four-manifolds.
thanks. ______________________ Neil R. Hoffman Assistant Professor Department of Mathematics 523 Math Science Building Oklahoma State University Stillwater, OK 74078-1058 405-744-7791 http://math.okstate.edu/people/nhoffman ________________________________ From: Mdtop <mdtop-bounces@mathdept.okstate.edu> on behalf of Henry Segerman <segerman@math.okstate.edu> Sent: Wednesday, April 12, 2017 12:58:14 PM To: mdtop Subject: [Mdtop] Topology seminar today Location: MSCS 428 Date and Time: Wednesday, April 12, 2017 - 3:30pm to 4:30pm Henry Segerman (Oklahoma State University) Connectivity of the set of triangulations of a 3- or 4-manifold Abstract: This is joint work with Hyam Rubinstein. Matveev and Piergallini independently show that the set of triangulations of a three-manifold is connected under 2-3 and 3-2 Pachner moves, excepting triangulations with only one tetrahedron. We give a more direct proof of their result which (in work in progress) allows us to extend the result to triangulations of four-manifolds.
participants (2)
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Henry Segerman -
Hoffman, Neil