Mdtop

mdtop@mathdept.okstate.edu

247 discussions

Student Poster Session - MSLC 3pm Friday May 5
by Hoffman, Neil 02 May '23

02 May '23

Hello everyone, I wanted invite everyone to the Student Poster Session in the MLSC this Friday, May 5th. The session will run from 3:30-4:30 with light refreshments will be served starting at 3pm. Students from the Research Methods class (MATH 3933) as well as other students who did research this semester will be presenting their work. We hope to see you there! ______________________ 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

1 0

Today in topology seminar
by Hoffman, Neil 02 May '23

02 May '23

Hello everyone, Today Eric Towers will be speaking in seminar. Topology Seminar 3:30 PM MSCS 509 Eric Towers, Oklahoma State University Title: Progress: Census of Knots in Lens Spaces Abstract: We will review our technique for combinatorially producing knots (and links) in lens spaces. We follow with progress in finding low-complexity lens space knot complement descriptions of 1-cusped census manifolds. Zoom info (same as last week): Neil Hoffman is inviting you to a scheduled Zoom meeting. Topic: Topology seminar Time: May 2, 2023 03:30 PM Central Time (US and Canada) Every week on Tue, until May 30, 2023, 5 occurrence(s) May 2, 2023 03:30 PM May 9, 2023 03:30 PM May 16, 2023 03:30 PM May 23, 2023 03:30 PM May 30, 2023 03:30 PM Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://okstate-edu.zoom.us/meeting/tJUvf--orTgiEtAYZvv5fEhJot_AVUKmGf9S/ic… Join Zoom Meeting https://okstate-edu.zoom.us/j/91286033884?pwd=bm9DSGJCbjlldmxHYlh3eDM1cUtwZ… Meeting ID: 912 8603 3884 Passcode: JSJDecomp One tap mobile +13462487799,,91286033884#,,,,*101999162# US (Houston) +16694449171,,91286033884#,,,,*101999162# US Dial by your location +1 346 248 7799 US (Houston) +1 669 444 9171 US +1 669 900 9128 US (San Jose) +1 719 359 4580 US +1 253 205 0468 US +1 253 215 8782 US (Tacoma) +1 689 278 1000 US +1 301 715 8592 US (Washington DC) +1 305 224 1968 US +1 309 205 3325 US +1 312 626 6799 US (Chicago) +1 360 209 5623 US +1 386 347 5053 US +1 507 473 4847 US +1 564 217 2000 US +1 646 558 8656 US (New York) +1 646 931 3860 US Meeting ID: 912 8603 3884 Passcode: 101999162 Find your local number: https://okstate-edu.zoom.us/u/adCmszVK4P Join by SIP 91286033884(a)zoomcrc.com Join by H.323 162.255.37.11 (US West) 162.255.36.11 (US East) 115.114.131.7 (India Mumbai) 115.114.115.7 (India Hyderabad) 213.19.144.110 (Amsterdam Netherlands) 213.244.140.110 (Germany) 103.122.166.55 (Australia Sydney) 103.122.167.55 (Australia Melbourne) 149.137.40.110 (Singapore) 64.211.144.160 (Brazil) 149.137.68.253 (Mexico) 69.174.57.160 (Canada Toronto) 65.39.152.160 (Canada Vancouver) 207.226.132.110 (Japan Tokyo) 149.137.24.110 (Japan Osaka) Meeting ID: 912 8603 3884 Passcode: 101999162 ______________________ 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

1 0

Today in topology seminar
by Hoffman, Neil 25 Apr '23

25 Apr '23

Hello everyone, Today Henry is speaking. His title and abstract are below: Speaker: Henry Segerman, Oklahoma State University Date: Apr 25, 2023 Time: 3:30 PM Room: MSCS 509 Title: From loom spaces to veering triangulations Abstract: I'll talk about joint work with Saul Schleimer on loom spaces - an axiomatic treatment of the leaf spaces associated to (drilled) pseudo-Anosov flows. A loom space is a copy of $\mathbb{R}^2$ with two transverse foliations. Following work of Guéritaud, from a loom space we construct a veering triangulation of $\mathbb{R}^3$. Meeting ID 912 8603 3884 Passcode JSJDecomp Neil Hoffman is inviting you to a scheduled Zoom meeting. Topic: Topology seminar Time: Apr 25, 2023 03:30 PM Central Time (US and Canada) Every week on Tue, until May 30, 2023, 6 occurrence(s) Apr 25, 2023 03:30 PM May 2, 2023 03:30 PM May 9, 2023 03:30 PM May 16, 2023 03:30 PM May 23, 2023 03:30 PM May 30, 2023 03:30 PM Weekly: https://okstate-edu.zoom.us/meeting/tJUvf--orTgiEtAYZvv5fEhJot_AVUKmGf9S/ic… ______________________ 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

1 0

Chesebro (3:30, Bryant talks this week
by Hoffman, Neil 17 Apr '23

17 Apr '23

Hello everyone, We have two events going on this week. Eric Chesebro, Farey recursion and 2-bridge link complements, MSCS 509, Tuesday 3:30pm Birch Bryant, Fibers as normal and spun-normal surfaces in link manifolds, MSCS 101, Wednesday 3:30pm For those scattered far and wide, both speakers have given permission to stream there talks. Join Zoom Meeting https://okstate-edu.zoom.us/j/91286033884?pwd=bm9DSGJCbjlldmxHYlh3eDM1cUtwZ… Meeting ID: 912 8603 3884 Passcode: JSJDecomp One tap mobile +13462487799,,91286033884#,,,,*101999162# US (Houston) +16694449171,,91286033884#,,,,*101999162# US Here are the abstracts: Farey recursion and 2-bridge link complements. Speaker: Eric Chesebro, University of Montana Date: Apr 18, 2023 Time: 3:30 PM Room: MSCS 509 Abstract: I will define Farey recursion and explain how it helps us understand the geometries of hyperbolic 2-bridge link complements. Fibers as normal and spun-normal surfaces in link manifolds Speaker: Birch Bryant, Oklahoma State University Date: Apr 19, 2023 Time: 3:30 PM Room: MSCS 101 Abstract: The theory of Normal Surfaces was developed by Kneser and expanded by Haken to find properly embedded essential surfaces triangulations of compact 3-manifolds. For ideal triangulations of cusped finite-volume hyperbolic 3-manifolds, Walsh showed if the ideal triangulation has essential edges, any incompressible surface $S$ can be realized as a spun-normal surface, provided $S$ is not a virtual fiber. One comes to the natural question posed directly by Cooper, Tillmann, and Worden: "For a fibered knot complement or fibered once-cusped 3-manifold $M$, is there always some ideal triangulation of $M$ such that the fiber is realized as an embedded spun-normal surface?" Using the techniques of crushing and inflating ideal triangulations developed by Jaco and Rubinstein, we will answer this question by giving an algorithm to construct for a fibered knot complement an ideal triangulation, $\mathcal T^*$, in which a fiber of the bundle structure spun-normalizes. The algorithm presented will also identify the fiber within a finite set of normal surface solutions of $\mathcal T^*$. ______________________ 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

1 0

Today in Topology!
by Hoffman, Neil 04 Apr '23

04 Apr '23

Hello everyone, Today will be holding our topology seminar in MSCS 509 at 3:30. I will be speaking. My title and abstract are below. Also, for the rest of the semester we have Eric Chesebro visiting on April 18, Birch defending April 19, and Eric Towers speaking May 2. Hope to see you there! Title: Triangulations and Trace fields Speaker: Neil Hoffman, Oklahoma State University Date: Apr 4, 2023 Time: 3:30 PM Room: MSCS 509 Abstract: The trace field of a hyperbolic 3-manifold is an invariant determined by arithmetic data. I will give a construction for this data and describe how 1) it can be computed from a triangulation of the manifold and 2) how complexity of the invariant can grow relative the number of tetrahedra in a triangulation. ______________________ 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

1 0

This week/next week
by Hoffman, Neil 27 Mar '23

27 Mar '23

This week we don't have topology seminar, but Henry and I are speaking in the Research Snapshot seminar on Wednesday at 3:30. I will be speaking next week in seminar and we should round out the semester with a good slate of talks. ______________________ 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

1 0

Re: Second announcement: Texas Geometry and Topology Conference at TCU April 14 - 16
by Hoffman, Neil 02 Mar '23

02 Mar '23

I am forwarding this along in case it is relevant. ______________________ 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: Park, Efton <e.park(a)tcu.edu> Sent: Thursday, March 2, 2023 11:52 AM Subject: Second announcement: Texas Geometry and Topology Conference at TCU April 14 - 16 CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe The spring 2023 meeting of the Texas Geometry and Topology Conference (TGTC) will be held on the campus of Texas Christian University (TCU) April 14 – 16. The speakers are: • Simone Cecchini, Texas A&M University • Dawei Chen, Boston College • Anna Fino, Florida International University • David Fisher, Rice University • Mohammad Ghomi, Georgia Institute of Technology • Svetlana Jitomirskaya, Georgia Institute of Technology • Tracy Payne, Idaho State University • Craig Sutton, Dartmouth College There is no registration fee for attending TGTC. Limited financial support is available to help defer the travel and living expenses of participants who do not have other funding for their research. Graduate students, junior faculty, women, individuals from groups under-represented in the mathematical sciences or from institutions with little federal support, and persons with disabilities are especially encouraged to participate and to apply for support. For more information, please see the conference website: https://cse.tcu.edu/mathematics/faculty-staff/tgtc.php<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcse.tcu.e…> If you plan to attend, please register by Pi Day. Efton Park TGTC Organizing Committee _______________________________________________ Efton Park Professor of Mathematics e.park(a)tcu.edu<mailto:e.park@tcu.edu> Box 298900 Texas Christian University Fort Worth, TX 76129 817-257-6345 _______________________________________________ There are three kinds of people in the world – those who can count, and those who can’t. _______________________________________________

1 0

Today in topology seminar
by Hoffman, Neil 23 Feb '23

23 Feb '23

Hello everyone, Today in topology seminar we have Jennifer Hom speaking at 4pm in MSCS 514. We will resume seminar at the normal time Tuesdays at 3:30 in the coming weeks. If you would like to sign up for a slot let me know. PL-surfaces in homology 4-balls Jennifer Hom, Georgia Institute of Technology Abstract: We consider manifold-knot pairs (Y, K) where Y is a homology 3-sphere that bounds a homology 4-ball. Adam Levine proved that there exist pairs (Y, K) such that K does not bound a PL-disk in any bounding homology ball. We show that the minimum genus of a PL surface S in any bounding homology ball can be arbitrarily large. The proof relies on Heegaard Floer homology. This is joint work with Matthew Stoffregen and Hugo Zhou. ______________________ 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

1 0

Fw: redbud
by Hoffman, Neil 07 Feb '23

07 Feb '23

Hi everyone, A few quick things. First, there is a colloquium today, but this is the last Tuesday colloquium of the semester. After this, our normal 3:30 pm Tuesday slot is free. Second, if you haven't registered for Redbud please do: https://docs.google.com/forms/d/e/1FAIpQLSfqCzjytNC3SGrpJcBHAaTHqOlnIDcP52_… It has the registration deadline as February 28, but the organizers are trying to give us a preference on funding, so if we could register ASAP (say by Friday) that would be best. 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: jing tao <jing(a)ou.edu> Sent: Tuesday, February 7, 2023 11:24 AM To: Matt Clay <mattclay(a)uark.edu>; Hoffman, Neil <neil.r.hoffman(a)okstate.edu> Subject: redbud CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe Hey guys, Can you rally your department to register for Redbud? We are trying to sort out funds right now and it would be immensely helpful if we can get an accurate headcount. Best, jing

1 0

Fw: Spring Redbud
by Hoffman, Neil 18 Jan '23

18 Jan '23

Hello everyone, If you are interested in attending the spring redbud conference, please register here: https://forms.gle/QjuwAv5P9DQkBaeN6 The conference webpage is available here: https://redbud.math.ou.edu/spring-2023/ Also, in the "Is there anything else we should know?" please let the organizers know if you would be willing to pick up someone from Will Rodgers Airport on your way to Norman. For reference, it seems to add about 15 minutes to our drive. ______________________ 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: jing tao <jing(a)ou.edu> Sent: Wednesday, January 18, 2023 2:15 PM To: Matt Clay <mattclay(a)uark.edu>; Hoffman, Neil <neil.r.hoffman(a)okstate.edu> Subject: Spring Redbud CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe Hi Matt and Neil, Can you guys spread the info about Redbud to your department and ask people to register? https://redbud.math.ou.edu/spring-2023/<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fredbud.ma…> Thanks! Jing

1 0

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

Mdtop