September 2018 - Mdtop - mathdept.okstate.edu

Seminar today
by Hoffman, Neil 11 Sep '18

11 Sep '18

Hello everyone, Today Henry will be speaking at 2:30 in room 405. His title and abstract are here: Title: Dehn surgery by shearing Abstract: I’ll talk about a new (to me) way to think about Dehn surgery. We implement (p,q) Dehn surgery within a solid torus by slicing along an annulus from the boundary to the core curve, then regluing with a varying amount of shear around the annulus. ______________________ 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

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Max Forester Today
by Hoffman, Neil 04 Sep '18

04 Sep '18

Hello everyone, Today Max Forester will be speaking in seminar (2:30 in room 405). His title and abstract are here: Title: Genus bounds in right-angled Artin groups Abstract: I will discuss how to find lower bounds for stable commutator length in rightangled Artin groups. The method has two parts: an easy topological argument, and an argument involving properties of CAT(0) cube complexes. ______________________ 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

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Topology seminar
by Henry Segerman 04 Sep '18

04 Sep '18

Max Forester will speak in the topology seminar (2:30-3:30 today, MSCS 405). Title: Genus bounds in right-angled Artin groups. Abstract: I will discuss how to find lower bounds for stable commutator length in right- angled Artin groups. The method has two parts: an easy topological argument, and an argument involving properties of CAT(0) cube complexes. Henry

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