Combinatorics Group

The combinatorics research group has over ten total members with a mixture of professorial faculty and graduate students, see below. The research interests of the faculty members are in hyperplane arrangements, graph theory, and matroid theory. Historically, the focus of this work has been on structure theory for graphs and matroids but has also included computational issues relating to these structures and various invariants associated with them. Group members have been well supported by federal research grants. More than 30 Ph.D. students have received degrees under the supervision of the professorial faculty in this group. Group members have produced more than 300 research publications.

More information about the LSU combinatorics seminar can be found here. If you would like to be notified by email about meetings of the Combinatorics Seminar, send a message to Christine Cho.

Group Members:

Christin Bibby

Christin Bibby
Ph.D. (Oregon, 2015; Advisor: Nick Proudfoot)

 Dan Cohen

Dan Cohen
Ph.D. (Northeastern, 1992; Advisor: R. Mark Goresky)

 Guoli Ding

Guoli Ding
Ph.D. (Rutgers, 1991; Advisor: Paul Seymour)
James Oxley

James Oxley
Ph.D. (Oxford, 1978; Advisor: Dominic Welsh)

 Zhiyu Wang

Zhiyu Wang
Ph.D. (South Carolina, 2020; Advisor: Linyuan Lu)

Graduate Students:

Gyaneshwar

Gyaneshwar "G" Agrahari
(Wang)

 Sean Boros

Sean Boros
(Oxley)

 Christine Cho

Chris Cho
(Oxley)

 Wayne

Wayne Ge
(Oxley)
Matthew Mizell

Matthew Mizell
(Oxley)

 Jake Weber

Jake Weber
(Ding)

 Weihao Xiar

Weihao Xia
(Wang)

Former Faculty and Postdocs:

  • Bogdan Oporowski, Professor (Ohio State, 1989; Advisor: Neil Robertson)
  • Zach Walsh, Postdoc (University of Waterloo, 2020; Advisor: Peter Nelson)
  • Ben Clark, Postdoc (Victoria University of Wellington, 2015; Advisor: Geoff Whittle)
  • Emily Marshall, Postdoc (Vanderbilt, 2014; Advisor: Mark Ellingham)
  • Stefan van Zwam, Assistant Professor (Eindhoven, 2009; Promotor: Bert Gerards; Co-Promotor: Rudi Pendavingh)
  • Dirk Vertigan, Professor (Oxford, 1991; Advisor: Dominic Welsh)

Recent Former Graduate Students:

  • Samuel Weiner; Advisor: Guoli Ding, Ph.D. 2025
  • Avin Sunuwar; Advisor: Guoli Ding, Ph.D. 2025
  • Brittian Qualls; Advisor: Guoli Ding; Bogdan Oporowski, Ph.D. 2025
  • James Dylan Douthitt; Advisor: James Oxley, Ph.D. 2025
  • Phuc Nguyen; Advisor: Guoli Ding, Ph.D. 2024
  • Cameron Crenshaw; Advisor: James Oxley, Ph.D. 2023
  • Jagdeep Singh; Advisor: James Oxley, Ph.D. 2022
  • Sarah Allred; Advisor: Bogdan Oporowski, Ph.D. 2022
  • Zachary Gershkoff; Advisor: James Oxley, Ph.D. 2021
  • Farid Bouya; Advisor: Bogdan Oporowski, Ph.D. 2020
  • Tara Fife; Advisor: James Oxley, Ph.D. 2020
  • Matthew Barnes; Advisor: Bogdan Oporowski, Ph.D. 2018
  • Joshua Fallon; Advisor: Bogdan Oporowski, Ph.D. 2018
  • Victoria Fontaine; Advisor: James Oxley, Ph.D. 2018
  • Kevin Grace; Advisor: Stefan van Zwam, Ph.D. 2018
  • Shilin Wang; Advisor: Guoli Ding, Ph.D. 2018
  • Kristen Wetzler; Advisor: James Oxley, Ph.D. 2018
  • Kimberly D'Souza; Advisor: Guoli Ding, Ph.D. 2016
  • Simon Pfeil; Advisor: James Oxley, Ph.D. 2016
  • Adam Beau Ferguson; Advisor: Guoli Ding, Ph.D. 2015
  • Chanun Lewchalermvongs; Advisor: Guoli Ding, Ph.D. 2015