Mdtop August 2020

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by Henry Segerman 30 Aug '20

30 Aug '20

Please ignore!

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Today in Topology
by Hoffman, Neil 26 Aug '20

26 Aug '20

Hello everyone, Today I will be speaking. We will use google meet for the meeting: https://meet.google.com/frv-bgow-byi Here is my title, abstract, and other info: Title: Infinitely many geometric triangulations in a cover of every cusped 3-manifold Speaker: Me Date: Aug 26, 2020 Time: 3:45 PM Room: Virtual meeting Abstract: A triangulation T of a cusped hyperbolic 3-manifold is geometric if admits a fundamental domain which decomposes into convex ideal tetrahedra with positive angles. It is an open question as to whether every hyperbolic 3–manifold admits a single geometric triangulation. A follow-up question is how many geometric triangulations can one manifold admit? Dadd and Duan showed that some manifolds admit infinitely many geometric triangulations. And Luo, Schleimer and Tillmann showed that every manifold has a cover admitting at least one geometric triangulation. We prove that every cusped hyperbolic 3– manifold has a finite cover admitting infinitely many geometric ideal triangulations. This cover is constructed in several stages, using tools developed by Gueritaud, Luo, Schleimer, and Tillmann. The geometric ideal triangulations that we produce can be organized into an infinite binary tree of Pachner moves. This is joint work with Dave Futer. ______________________ 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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Possible time change
by Hoffman, Neil 18 Aug '20

18 Aug '20

Hello everyone, Thanks to everyone getting back to me on seminar. I wanted to ask if anyone has a conflict from 3:45-4:45 on Wednesdays for this semester. And then we can go back to Tuesdays at 3:30 next semester. It is easier to move the seminar time this semester because don't need to worry about room reservations. Please let me know if you are interested in coming to seminar but won't be able to make Wednesdays from 3:45-4:45. ______________________ 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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Organizational meeting today
by Hoffman, Neil 18 Aug '20

18 Aug '20

Hello everyone, We'll have the topology seminar organizational meeting today. We try using google meet: Here is the link. It should open up at 3:25pm today (central time). meet.google.com/vht-gefi-xex Best, Neil ______________________ 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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Mdtop August 2020