Knots and Graphs

https://people.math.osu.edu/chmutov.1/wor-gr-su23/wor-gr.htm

Working Group [Summer 2023]
MATH 4193, class number 16649
June 5 --- July 28, 2023

Instructor: Sergei Chmutov

CLASSES: Mondays June 5, 9, 12, 16, 3:00-4:00pm at CH-240
Starting from June 21 online classes on ZOOM: Monday, Friday 3:00-4:00pm
+ one hour zoom meeting with each smaller group.             

Past year programs

       2022   2021
       2020   2019   2018   2017   2016
       2015   2014   2013   2012   2011
       2010   2009   2007   2006   2005

  • Announcement
  • List of participants
  • Research projects
  • The Knots Atlas
  • Table of Virtual Knots by Jeremy Green
  • Our results

  • Schedule

    Week 1

     
    Mo. June 5S.Chmutov,  Introduction. Knots.    Handout.
    Fr. June 9S.Chmutov,  The Jones, HOMFLYPT, and arrow polynomials.    Handout.   

    Week 2

     
    Mo. June 12S.Chmutov,  Graphs and their polynomials.    Handout.
    Fr. June 16S.Chmutov,  Ribbon graphs and Thistlethwaite's theorem.    Handout.   

    Week 3

     
    Fr. June 23G.Black, Y.Xuan,  Goeritz Matrix and Knot Coloring.    Slides.   

    Week 4

     
    Mo. June 26L.Lozinskiy, P.Jois,  Virtual knots. The arrow and Sawollek polynomials.    Slides.
    Fr. June 30C.Li,  Two Generalizations of Fox n-Colorability via Polynomials and Quandles.    Slides.

    Week 5

     
    Mo. July 3Y.Shen  Alternating knots and Tait Conjecture.    Slides.
    J.Case  Arrow polynomial and checkerboard colorability.    Slides.
    Fr. July 7M.Kikta,  Goeritz Matrices, Tait Graphs, Matroids, and Polynomials.     Slides.

    Week 6

     
    Mo. July 10P.Jois,  Revisiting the Conway Polynomial for Virtual Links.    Slides.
    L.Lozinskiy,  Arrow Polynomial and Checkerboard Colorability.    Slides.
    Fr. July 14G.Black,  Ribbon Graphs and the Bollobás-Riordan polynomial.     Slides.
    Y.Xuan,  Double Covering of Virtual Link and Pseudo Goeritz Matrix.     Slides.

    Week 7

     
    Mo. July 17Y.Shen,  Some algebraic structures of links: from 0 to ε.    Slides.
    Fr. July 21C.Li,  Heap Colorings.     Slides.

    Week 8

     
    Mo. July 24L.Lozinskiy,  Unknot Checkerboard Colorings: 2 new approaches.     Slides.
    J.Case,  Arrow Polynomial and mod P Alexander Numbering.     Slides.
    Fr. July 28M.Kikta,  Arrow Polynomial from a Gauss Code.    Slides.