Mdtop November 2017

mdtop@mathdept.okstate.edu

1 participants
3 discussions

Topology seminar tomorrow at 3:00
by Hoffman, Neil 27 Nov '17

27 Nov '17

Hello everyone, Tomorrow we will have topology seminar at 3:00 pm in the 405/423 classroom. The title and abstract are below: Title: A local to global argument on low dimensional manifolds Speaker: Sam Nariman, Northwestern Date: Nov 28, 2017 Time: 3:00 PM Room: MSCS 423 Abstract: We describe a local to global method by cutting a manifold into simpler pieces in a ”contractible spaces of choices”. In doing so, we give a simpler approach to Thurston’s theorem on homeomorphisms, Cerf’s theorem on comparing diffeomorphisms and homeomorphisms of three manifolds. If time permits I will describe how this approach could possibly give a different proof of Smale’s conjecture (Gabai’s theorem) for hyperbolic 3 manifold M which says that the group Isom(M) is homotopy equivalent to Diff(M). (Note the special day.) ______________________ 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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Henry is speaking today
by Hoffman, Neil 08 Nov '17

08 Nov '17

Hello everyone, Henry will be speaking today in seminar. His title and abstract are below: >From veering triangulations to pseudo-Anosov flows Speaker: Henry Segerman, OSU Date: Nov 8, 2017 Time: 3:30 PM Room: MSCS 509 Abstract: Agol introduced veering triangulations of mapping tori, whose combinatorics are canonically associated to the pseudo-Anosov monodromy. Guéritaud and Agol generalised an alternative construction to any closed manifold equipped with a pseudo-Anosov flow without perfect fits. We prove the converse, showing that veering triangulations are a perfect combinatorialisation of such flows. ______________________ 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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Fw: fall redbud
by Hoffman, Neil 03 Nov '17

03 Nov '17

Hello everyone, If you are planning on going to redbud, fill out the travel authorization form and email it to Matt Clay <mattclay(a)uark.edu>. Here are instructions about the vendor ID form. >If they participated in the Spring Redbud at UArk, we should have their >vendor id form on file and there is no need to send another. Else, or if >they moved, they will need to complete this form as well. If they are only >updating an address, they can skip the SSN. If you want a per diem or mileage reimbursement, fill out the form. Also, Henry is driving out in his car to redbud. We have two other passengers in that car. Robert and Henry you guys are speaking so let me know which one of you is driving. Anyone else who plans on going let me know when you send in the form. 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 ________________________________ From: Matt Clay <mattclay(a)uark.edu> Sent: Friday, November 3, 2017 2:49 PM To: Hoffman, Neil Subject: Re: fall redbud Hi Neil, I attached the travel authorization form, please forward to folks at OSU planning to go to Redbud. We will definitely pay mileage and might be able to pay per diem, we’ll have to see how far the funds strecth. Drivers should complete the form and if non-drivers want the possibility of per diem, they should complete too. Have OSU participants email this back to me quickly. If they participated in the Spring Redbud at UArk, we should have their vendor id form on file and there is no need to send another. Else, or if they moved, they will need to complete this form as well. If they are only updating an address, they can skip the SSN. People can emial me with questions. Also, I’m glad to see that you are visiting here in a couple of weeks. I put your title/abstract online. Let me know if it looks wrong: http://comp.uark.edu/~mattclay/TopologySeminar/Fall2017/171116.html Best Regards, Matt ------------------------------------ Matthew T. Clay Associate Professor Department of Mathematical Sciences University of Arkansas 479-575-5195 ------------------------------------ On Oct 30, 2017, at 1:56 PM, Hoffman, Neil <neil.r.hoffman(a)okstate.edu<mailto:neil.r.hoffman@okstate.edu>> wrote: Hi Matt, I think we are probably going to drive out for one day. I will try to pin down a list of cars, but probably 2 or 3 are going out. 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<https://urldefense.proofpoint.com/v2/url?u=http-3A__math.okstate.edu_people…> ________________________________ From: Matt Clay <mattclay(a)uark.edu<mailto:mattclay@uark.edu>> Sent: Monday, October 30, 2017 9:21:19 AM To: Hoffman, Neil Subject: fall redbud Hi Neil, Do you know how many cars you’ll be taking down to Norman for the fall redbud? Are you all planning on making it a one day deal or is anyone planning to stay overnight? Best Regards, Matt ------------------------------------ Matthew T. Clay Associate Professor Department of Mathematical Sciences University of Arkansas 479-575-5195 ------------------------------------

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Mdtop November 2017