Combinatorics Group

The combinatorics research group has three faculty members and one postdoc, see below. There are currently nine Ph.D. students working with group members. They are also listed below. The research interests of the faculty members are in graph theory and matroid theory. 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 40 Ph.D. students have received degrees under the supervision of the three professorial faculty in the group. Group members have produced more than 250 research publications.

If you would like to be notified by email about meetings of the Combinatorics Seminar, send a message to Christine Cho.

Group Members:

Guoli Ding

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

Bogdan Oporowski

Bogdan Oporowski
Ph.D. (Ohio State, 1989; Advisor: Neil Robertson)

James Oxley

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

Graduate Students:

Christine Cho

Chris Cho
Advisor: James Oxley

Cameron Crenshaw

Cameron Crenshaw
Advisor: James Oxley

Dylan Douthitt

Dylan Douthitt
Advisor: James Oxley

Matthew Mizell

Matthew Mizell
Advisor: James Oxley

Phuc Nguyen

Phuc Nguyen
Advisor: Guoli Ding

Brittian Qualls

Britt Qualls
Advisor: Bogdan Oporowski

Samuel Weiner

Samuel Weiner
Advisor: Guoli Ding

Former Faculty and Postdocs:

  • 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:

  • 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