Mathmajors

mathmajors@mathdept.okstate.edu

130 discussions

Events for Jennifer Hom's visit
by Hoffman, Neil 20 Feb '23

20 Feb '23

Hello everyone, This week we have Jennifer Hom (Georgia Institute of Technology) visiting the department as part of the Distinguished Women in Mathematics Colloquium Series. There will be a lunch and panel discussion at 12:30 on Wednesday in MSCS 523. Please RSVP by tomorrow at 1pm, if you are interested in coming. Also, please let me know if you have any dietary preferences or restrictions as part of the RSVP. On Thursday at 4pm, Prof. Hom will be giving a seminar talk in MSCS 514: "PL-surfaces in homology 4-balls" (abstract: https://www.mathdept.okstate.edu/announce/pdf/1437.pdf) And on Friday, she will be giving a colloquium talk in MSCS 101: "Unknotting number and sattelittes" (abstract: https://www.mathdept.okstate.edu/announce/pdf/1406.pdf) with refreshments to follow. We look forward to seeing everyone this week. ______________________ 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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Association for Women in Mathematics - OSU chapter elections
by Hoffman, Neil 10 Feb '23

10 Feb '23

Hello math majors, The Oklahoma State Chapter of the Association for Women in Mathematics wanted to let you know about two events coming up in the next few weeks. First, we will be holding our first meeting of the 2023 calendar year next Wednesday February 15 at 3:30pm in room MSCS 115. The first part of the meeting will be a meet and greet with snacks and games, followed at 4pm by our elections for the 2023 cohort of officers for the 2023 calendar year. There are four officer positions up for election: 1. President - the chief executive officer of the chapter 2. Vice-president - who fills in for the president and helps lead the chapter. 3. Secretary - who in charge of recruiting and promotion 4. Treasurer - who is responsible for the chapter's finances. The following week, on Wednesday February 22 at 1:30pm, we will have a lunch and panel discussion with the spring 2023 Distinguished Women in Mathematics Colloquium speaker, Jennifer Hom, Georgia Insitute of Technology also at 3:30pm in room MSCS 445. If you are interested in joining us for that please respond to this email. We hope to see you at one or both events! While the OSU - AWM is an organization that promotes gender minorities in mathematics, everyone is welcome to join our events. ______________________ 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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Math Colloquia this week
by David Wright 07 Feb '23

07 Feb '23

Hello: We have two math colloquia this week: Tuesday. Feb. 3, 3:30PM Speaker: Jayan Mukherjee, University of California, Riverside Title: Multiple Structures in Algebraic Geometry: New approaches to classical and current problems Zoom link: https://okstate-edu.zoom.us/j/92686537208?pwd=bHFZVnd4UDFncC9MblJDS1V1Z1FEU… On Friday, February 10, 3:30 PM, we have Speaker: Yanwen Luo, Rutgers University, New Brunswick Title: Drawing and Morphing Graphs on Surfaces Zoom link: https://okstate-edu.zoom.us/j/98729728660?pwd=OEtjQy9QWmlCZWl2M3ZFcHFUUUtTd… Both abstracts are attacjed to this message. After this week, we probably will have a little hiatus, but there are dates available for colloquia. If you have suggestions for speakers, please let me know. David

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Warm yourselves with Math Colloquia this week
by David Wright 30 Jan '23

30 Jan '23

Hi, There are two virtual math colloquia this week from top young mathematicians. Even though the campus may be closed tomorrow, Zoom will not be. The first colloquium is: Tuesday, Jan. 31, 3:30 PM via Zoom: Xiaoqian Gong, Arizona State University Title: On the Mathematical Properties of Some Multi-Scale Traffic Models Abstract is attached with QR code for Zoom link. Also, here is the Zoom link https://okstate-edu.zoom.us/j/94559508908?pwd=aFZNNVZSVGRUTXNoaUhzRGZIMVNiZ… Second colloquium is: Friday, Feb. 03, 9:00 AM via Zoom (Note the speaker is in Hong Kong, which is why this is an early morning talk.) Kayue Daniel Wong, The Chinese University of Hong Kong Title: Classifying the unitary dual of real reductive groups Abstract is attached with QR code for Zoom link. Also here is the Zoom link: https://okstate-edu.zoom.us/j/91911677357?pwd=RDVxRmMvNUJEd21reE9lcXk0N2h2U… I hope you can join us. The talks will be recorded, and a link may be provided upon request after the talks. Sincerely, David Wright

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Math Colloquia this week
by David Wright 23 Jan '23

23 Jan '23

Dear friends: There are two math colloquia this week: Tuesday, 3:30 PM at zoom link: https://okstate-edu.zoom.us/j/93298136222?pwd=VTg4c2xuRG4wMExKVFJwSWp1LzBPQ… Sümeyra Sakalli, University of Arkansas Exotic 4-manifolds and complex surfaces, algebraic fibrations, singularities and knots Abstract is attached to this message, which has a QR code for the Zoom link. Friday, 3:30 PM at Zoom link: https://okstate-edu.zoom.us/j/98083413777?pwd=aGtRckVTOTgzV2xucGdPNGE1ZmNVd… Serin Hong, Simons Laufer MSI/University of Michigan p-adic Geometry - A Grand Junction of Mathematics Abstract attached to this message. Hope to see you there, David Wright

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Colloquia this week
by David Wright 16 Jan '23

16 Jan '23

The OSU Math Department colloquia begin this week: First up, Tuesday, 3:30 PM virtual with zoom link https://okstate-edu.zoom.us/j/95282160606?pwd=U3RDWEZyZlpINmJPTXZXUzVoSDNLQ… Sean T. McQuade, Rutgers Camden, Center for Comput. and Integr. Biology How chemical networks can be in equilibrium Abstract: Chemical networks, such as metabolism can be simulated to assist in an array of research including new drug discovery, personalized medicine, and testing high-risk treatment before applying it to humans. Improved biochemical simulations can also reduce our dependence on animal testing before clinical trials. This talk demonstrates a mathematical framework for biochemical systems that progresses toward improved early phase drug dis- covery and personalized medicine. ================================================= Second, Friday 3:30 PM, Virtual with Zoom link https://okstate-edu.zoom.us/j/93956536024?pwd=d1Vrd1FnMjRnb1FZNEthQXRVQnFtd… Justin Lacini, University of Kansas Syzygies of adjoint linear series on projective varieties Abstract: Syzygies of algebraic varieties have long been a topic of intense interest among algebraists and geometers alike. Starting with the pioneering work of Mark Green on curves, numerous attempts have been made to extend these results to higher dimensions. Ein and Lazarsfeld proved that if A is a very ample line bundle, then K_X + mA satisfies property Np for any m ≥ n + 1 + p. It has ever since been an open question if the same holds true for A ample and basepoint free. In joint work with Purnaprajna Bangere we give a positive answer to this question. ============================================================= I hope you enjoy these math talks from top young mathematicians. Sincerely, David Wright

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Math Colloquia
by David Wright 11 Jan '23

11 Jan '23

Hi, For the next four weeks, we have scheduled Collouia by a selection of top young mathematicians. The list is attached. These will be Zoom talks, and the Zoom links and abstracts will be emailed out shortly before the talks. Some of the title and abstracts are at the department's seminar sites: https://www.mathdept.okstate.edu/announce/ or the department lounge bulletin board. For faculty, the Zoom links will be posted at the Department Canvas site https://canvas.okstate.edu/courses/129477 Hope to see you at the talks. If you have someone in mind to invite for a colloquium later in the term, please let me know. The schedule is fairly open. Sincerely, David Wright

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Math Colloquium on Friday Dec. 2
by David Wright 01 Dec '22

01 Dec '22

Dear friends, There is a mathmatics colloquium tomorrow in MSCS 101 at 3:30PM. Refreshments will be at 4:30 in the department lounge. The speaker is Professor Weizhang Huang of the University of Kansas and his title is The MMPDE moving mesh method and applications His abstract may be found below. Please join us for this talk on an interesting numerical method for solving partial differential equations. Best wishes, David Wright Abstract: The MMPDE moving mesh method is a dynamic mesh adaptation method for use in the numerical solution of partial differential equations. It employs a partial differential equation (MMPDE) to move the mesh nodes continuously in time and orderly in space while adapting to evolving features in the underlying problem. The MMPDE is formulated as the gradient flow equation of a meshing functional that is typically designed based on geometric, physical, and/or accuracy considerations. In this talk, I will describe the MMPDE method and a new discretization of the method. This new discretization gives the mesh velocities explicitly, analytically, and in a compact matrix form, which in turn leads to a simple, efficient, and robust implementation of the MMPDE method. In particular, it works for convex or nonconvex domains in any dimension and is guaranteed for mesh nonsingularity (free of mesh tangling). Applications of the method will be discussed, including bulk and surface mesh smoothing (to improve mesh quality), generation of anisotropic polygonal meshes, and the numerical solution of the porous medium equation, the regularized long-wave equation, the phase-field modeling of brittle fracture, shallow water equations, and moving and free boundary problems.

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Zoom Link for Math Colloquium Today
by David Wright 18 Nov '22

18 Nov '22

Dear friends, The Zoom link for today's colloqium in MSCS 101 at 3:30 Pm is down below Speaker: Kazuo Yamazaki, Texas Tech University Title: Singular stochastic PDE's and non-uniqueness in mathematical physics and fluid mechanics Topic: Math Colloquium Time: Nov 18, 2022 03:30 PM Central Time (US and Canada) Join Zoom Meeting https://zoom.us/j/99345536093?pwd=RFhKNXJBMStvcVlTZnhudVAvc1ZRdz09 Meeting ID: 993 4553 6093 Passcode: 716173 Join by Skype for Business https://zoom.us/skype/99345536093

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Math Colloquium On Friday
by David Wright 17 Nov '22

17 Nov '22

Dear friends: On Friday, we welcome back an OSU alum Kazuo Yamazaki, who earned his doctorate here in 2014 under the direction Of Professor Jiahong Wu, and has since become an Assistant Professor at Texas Tech University. Dr. Yamazaki will deliver the colloquium at 3:30 PM on Friday in MSCS 101 on the first floor. Title: Singular stochastic PDE's and non-uniqueness in mathematical physics and fluid mechanics His abstract is below. There will be refreshments after the colloquium at 4:30 in the lounge. After that, we will be taking Dr. Yamazaki out to dinner and you are welcome to come along. Details to be arranged on Friday. Sincerely, David Wright Abstract: In this talk, I would like to explain recent developments in PDE's of my interest. First, many PDE's that were derived and analyzed by physicists consisted of random force, specifically space-time white noise. Examples include Kardar-Parisi-Zhang equation or Phi4 model from quantum field theory. The roughness of such noise led to a lack of sufficient spatial regularity for the solution and therefore the non-linear terms therein to be ill-defined. The recent inventions of the theory of regularity structures by Hairer and the theory of paracontrolled distributions by Gubinelli, Imkeller, and Perkowski nonetheless allow one to obtain some solution theory, and their contributions are considered to be exceptionally important in recent advances in mathematics. Second, the convex integration technique, originally accredited to the work of Nash in geometry in 1954, was recently extended significantly and adapted to equations of fluids. It has led to multiple breakthroughs, e.g., the resolution of Onsager's conjecture about Euler equations from 1949, Taylor's conjecture about MHD from 1974, non-uniqueness of the weak solution to the 3D Navier-Stokes equations which settled Serrin's conjecture from 1963. After describing these developments, I would like to explain more recent developments, as well as open problems that connect these two techniques.

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Mathmajors