Faculty profile
James Geelen
Back to facultyResearch
Read how they describe their research on their University of Waterloo profile.
Latest papers
OpenAI's proof of the Cycle Double Cover Theorem
arXiv (Cornell University) · 2026 · first author
OpenAI's proof of the Cycle Double Cover Theorem
arXiv (Cornell University) · 2026 · first author
Average plane-size in complex-representable matroids
COMBINATORICA · 2025
Latest funding
- $90,000
Matroid minors
NSERC · 2011 · Principal investigator
- $160,000
Well-quasi-ordering for binary matroids
NSERC · 2006 · Principal investigator
- $120,000
Short certificates for matroid representation
NSERC · 2002 · Principal investigator
114 publications.
OpenAI's proof of the Cycle Double Cover Theorem
Jim Geelen
OpenAI's proof of the Cycle Double Cover Theorem
Jim Geelen
Average plane-size in complex-representable matroids
Rutger Campbell, Jim Geelen, Matthew E. Kroeker
Taking minors without splitting tangles
Jim Geelen
A Sylvester–Gallai-Type Theorem for Complex-Representable Matroids
Jim Geelen, Matthew E. Kroeker
Unavoidable Flats in Matroids Representable over Prime Fields
Jim Geelen, Matthew E. Kroeker
Excluding a Line from Complex-Representable Matroids
Jim Geelen, Peter S. Nelson, Zach Walsh
Graph Theory
Jim Geelen, Daniel Král͏̌, Alexander Scott
Average plane-size in complex-representable matroids
Rutger Campbell, Jim Geelen, Matthew E. Kroeker
Unavoidable flats in matroids representable over prime fields
Jim Geelen, Matthew E. Kroeker
Matroid minors
Principal investigators: Geelen, James
Well-quasi-ordering for binary matroids
Principal investigators: Geelen, James
Short certificates for matroid representation
Principal investigators: Geelen, James
Combinatorial optimization: matchings, matroids and algorithms
Principal investigators: Geelen, James
From public funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998 with their latest competition results, the Canada Foundation for Innovation, Genome Canada, the Canadian Space Agency, Canada Research Chairs, the Fonds de recherche du Québec, Ontario research funding, Michael Smith Health Research BC, the Canadian Cancer Society, Heart & Stroke and Brain Canada.
Frequent collaborators
- Jim Geelen and James Geelen: 114 shared papers
- Shai Ben-David and Shalev Ben-David: 72 shared papers
- Edward Lee and Jim Geelen: 2 shared papers
- Edward Lee and James Geelen: 2 shared papers
- Shai Ben-David and Jim Geelen: 2 shared papers
- Shai Ben-David and James Geelen: 2 shared papers
- Shalev Ben-David and Jim Geelen: 2 shared papers
- Shalev Ben-David and James Geelen: 2 shared papers
- David McKinnon and Jim Geelen: 1 shared paper
- David McKinnon and James Geelen: 1 shared paper
- Adrian Vetta and Jim Geelen: 1 shared paper
- Adrian Vetta and James Geelen: 1 shared paper
- Department of Combinatorics and Optimization
- Department of Computer and Mathematical Sciences
- School of Computer Science
- Cheriton School of Computer Science
- McGill School Of Computer Science
- Department of Pure Mathematics
Co-authors at University of Waterloo, colored by department. Thicker lines mean more shared papers; select anyone to open their profile and their own map.
Jim Geelen
Department of Combinatorics and Optimization
114 shared papers, latest 2026
Shai Ben-David
School of Computer Science
2 shared papers, latest 2015
Shalev Ben-David
Cheriton School of Computer Science
2 shared papers, latest 2015
Edward Lee
Department of Computer and Mathematical Sciences
2 shared papers, latest 2019
Bruce Reed
Department of Mathematics and Statistics
1 shared papers, latest 2008
David McKinnon
Department of Pure Mathematics
1 shared papers, latest 2008
Adrian Vetta
McGill School Of Computer Science
1 shared papers, latest 2008
Bruce Reed
School of Computer Science
1 shared papers, latest 2008
A short, specific email works best. This draft uses one of their recent papers; replace the parts in brackets with your own details before sending.
Profile data last refreshed on September 29, 2026 from the university directory, publication records and public research funding records.