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James F. Geelen
Person information
- affiliation: University of Waterloo, Department of Combinatorics and Optimization, Canada
- award (2003): Fulkerson Prize
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2020 – today
- 2023
- [j75]Jim Geelen, O-joung Kwon, Rose McCarty, Paul Wollan:
The Grid Theorem for vertex-minors. J. Comb. Theory B 158(Part): 93-116 (2023) - 2021
- [j74]Jim Geelen, Hao Sun:
A proof of Rado's Theorem via principal extension. Adv. Appl. Math. 126: 102013 (2021) - [j73]Jim Geelen, Cynthia A. Rodríguez Villalobos:
Disjoint non-balanced A-paths in biased graphs. Adv. Appl. Math. 126: 102014 (2021) - 2020
- [j72]Jim Geelen, Florian Hoersch:
Matroid fragility and relaxations of circuit hyperplanes. J. Comb. Theory B 142: 36-42 (2020) - [j71]Rutger Campbell, Jim Geelen:
On the complex-representable excluded minors for real-representability. J. Comb. Theory B 143: 16-28 (2020) - [j70]Jim Geelen, Edward Lee:
Naji's characterization of circle graphs. J. Graph Theory 93(1): 21-33 (2020)
2010 – 2019
- 2019
- [j69]Sally Dong, Jim Geelen:
Improved Bounds for Rota's Basis Conjecture. Comb. 39(2): 265-272 (2019) - 2018
- [j68]Jim Geelen, Rohan Kapadia:
Computing Girth and Cogirth in Perturbed Graphic Matroids. Comb. 38(1): 167-191 (2018) - [j67]Jim Geelen, Tony Huynh, R. Bruce Richter:
Explicit bounds for graph minors. J. Comb. Theory B 132: 80-106 (2018) - [j66]Rong Chen, Jim Geelen:
Infinitely many excluded minors for frame matroids and for lifted-graphic matroids. J. Comb. Theory B 133: 46-53 (2018) - 2017
- [j65]Jim Geelen, Peter Nelson:
Odd circuits in dense binary matroids. Comb. 37(1): 41-47 (2017) - [j64]Jim Geelen, Peter Nelson:
The structure of matroids with a spanning clique or projective geometry. J. Comb. Theory B 127: 65-81 (2017) - 2016
- [j63]Jim Geelen, Peter Nelson:
The critical number of dense triangle-free binary matroids. J. Comb. Theory B 116: 238-249 (2016) - [j62]Jim Geelen, Geoff Whittle:
Certifying non-representability of matroids over prime fields. J. Comb. Theory B 117: 22-33 (2016) - [j61]Shalev Ben-David, Jim Geelen:
On Rota's Conjecture and nested separations in matroids. J. Comb. Theory B 119: 1-11 (2016) - 2015
- [j60]Jim Geelen, Peter Nelson:
An analogue of the Erdős-Stone theorem for finite geometries. Comb. 35(2): 209-214 (2015) - [j59]Jim Geelen, Peter Nelson:
The number of lines in a matroid with no U2, n-minor. Eur. J. Comb. 50: 115-122 (2015) - [j58]Jim Geelen, Peter Nelson:
A density Hales-Jewett theorem for matroids. J. Comb. Theory B 112: 70-77 (2015) - [j57]Jim Geelen, Stefan H. M. van Zwam:
Matroid 3-connectivity and branch width. J. Comb. Theory B 112: 104-123 (2015) - [j56]Jim Geelen, Rohan Kapadia:
Representability of matroids with a large projective geometry minor. J. Comb. Theory B 112: 154-161 (2015) - [j55]Jim Geelen, Peter Nelson:
Projective geometries in exponentially dense matroids. I. J. Comb. Theory B 113: 185-207 (2015) - [j54]Jim Geelen, Peter Nelson:
Matroids denser than a clique. J. Comb. Theory B 114: 51-69 (2015) - [i1]Jim Geelen, Rohan Kapadia:
Computing girth and cogirth in perturbed graphic matroids. CoRR abs/1504.07647 (2015) - 2014
- [j53]Jim Geelen:
A geometric version of the Andrásfai-Erdős-Sós Theorem. Adv. Appl. Math. 59: 1-7 (2014) - 2013
- [j52]Jim Geelen, Peter Nelson:
On minor-closed classes of matroids with exponential growth rate. Adv. Appl. Math. 50(1): 142-154 (2013) - [j51]Jim Geelen, Geoff Whittle:
Inequivalent representations of matroids over prime fields. Adv. Appl. Math. 51(1): 1-175 (2013) - [j50]Jim Geelen, Bert Gerards:
Characterizing graphic matroids by a system of linear equations. J. Comb. Theory B 103(5): 642-646 (2013) - [p1]Jim Geelen, Bert Gerards, Geoff Whittle:
Structure in minor-closed classes of matroids. Surveys in Combinatorics 2013: 327-362 - 2011
- [j49]Jim Geelen:
Small cocircuits in matroids. Eur. J. Comb. 32(6): 795-801 (2011) - 2010
- [j48]Jim Geelen, Geoff Whittle:
The projective plane is a stabilizer. J. Comb. Theory B 100(2): 128-131 (2010) - [j47]Jim Geelen, Peter Nelson:
The number of points in a matroid with no n-point line as a minor. J. Comb. Theory B 100(6): 625-630 (2010) - [j46]Jim Geelen, Bert Gerards, Geoff Whittle:
On inequivalent representations of matroids over non-prime fields. J. Comb. Theory B 100(6): 740-743 (2010)
2000 – 2009
- 2009
- [j45]Jim Geelen, Kasper Kabell:
Projective geometries in dense matroids. J. Comb. Theory B 99(1): 1-8 (2009) - [j44]Jim Geelen, Bert Gerards, Bruce A. Reed, Paul D. Seymour, Adrian Vetta:
On the odd-minor variant of Hadwiger's conjecture. J. Comb. Theory B 99(1): 20-29 (2009) - [j43]Jim Geelen, Bert Gerards:
Excluding a group-labelled graph. J. Comb. Theory B 99(1): 247-253 (2009) - [j42]Jim Geelen, Kasper Kabell:
The Erdös-Pósa property for matroid circuits. J. Comb. Theory B 99(2): 407-419 (2009) - [j41]Jim Geelen, Joseph P. S. Kung, Geoff Whittle:
Growth rates of minor-closed classes of matroids. J. Comb. Theory B 99(2): 420-427 (2009) - [j40]Jim Geelen, Bert Gerards, Geoff Whittle:
Tangles, tree-decompositions and grids in matroids. J. Comb. Theory B 99(4): 657-667 (2009) - [j39]Jim Geelen, Sang-il Oum:
Circle graph obstructions under pivoting. J. Graph Theory 61(1): 1-11 (2009) - 2008
- [j38]Jim Geelen:
Some open problems on excluding a uniform matroid. Adv. Appl. Math. 41(4): 628-637 (2008) - [j37]Maria Chudnovsky, William H. Cunningham, Jim Geelen:
An algorithm for packing non-zero A -paths in group-labelled graphs. Comb. 28(2): 145-161 (2008) - [j36]Jim Geelen, Xiangqian Zhou:
Generating weakly 4-connected matroids. J. Comb. Theory B 98(3): 538-557 (2008) - [j35]Jim Geelen, Anjie Guo, David McKinnon:
Straight line embeddings of cubic planar graphs with integer edge lengths. J. Graph Theory 58(3): 270-274 (2008) - 2007
- [j34]Jim Geelen, Bert Gerards, Geoff Whittle:
Excluding a planar graph from GF(q)-representable matroids. J. Comb. Theory B 97(6): 971-998 (2007) - [j33]Jim Geelen, Kerri Webb:
On Rota's Basis Conjecture. SIAM J. Discret. Math. 21(3): 802-804 (2007) - [c2]William H. Cunningham, Jim Geelen:
On Integer Programming and the Branch-Width of the Constraint Matrix. IPCO 2007: 158-166 - 2006
- [j32]Maria Chudnovsky, Jim Geelen, Bert Gerards, Luis A. Goddyn, Michael Lohman, Paul D. Seymour:
Packing Non-Zero A-Paths In Group-Labelled Graphs. Comb. 26(5): 521-532 (2006) - [j31]James F. Geelen, Bert Gerards, Geoff Whittle:
On Rota's conjecture and excluded minors containing large projective geometries. J. Comb. Theory B 96(3): 405-425 (2006) - [j30]James F. Geelen, Bert Gerards, Neil Robertson, Geoff Whittle:
Obstructions to branch-decomposition of matroids. J. Comb. Theory B 96(4): 560-570 (2006) - [j29]Jim Geelen, Xiangqian Zhou:
A Splitter Theorem for Internally 4-Connected Binary Matroids. SIAM J. Discret. Math. 20(3): 578-587 (2006) - [j28]Jim Geelen, Bert Gerards, Geoff Whittle:
Matroid $T$-Connectivity. SIAM J. Discret. Math. 20(3): 588-596 (2006) - [j27]Jim Geelen, Peter J. Humphries:
Rota's Basis Conjecture for Paving Matroids. SIAM J. Discret. Math. 20(4): 1042-1045 (2006) - 2005
- [j26]James F. Geelen, Satoru Iwata:
Matroid Matching Via Mixed Skew-Symmetric Matrices. Comb. 25(2): 187-215 (2005) - [j25]James F. Geelen, Bert Gerards:
Regular matroid decomposition via signed graphs. J. Graph Theory 48(1): 74-84 (2005) - [j24]Phyllis Koenig, Edward E. Smith, Guila Glosser, Christian Devita, Peachie Moore, Corey McMillan, James F. Geelen, Murray Grossman:
The neural basis for novel semantic categorization. NeuroImage 24(2): 369-383 (2005) - 2004
- [j23]James F. Geelen, R. Bruce Richter, Gelasio Salazar:
Embedding grids in surfaces. Eur. J. Comb. 25(6): 785-792 (2004) - [j22]James F. Geelen, James G. Oxley, Dirk Vertigan, Geoff Whittle:
A short proof of non-GF(5)-representability of matroids. J. Comb. Theory B 91(1): 105-121 (2004) - [j21]James F. Geelen, Dillon Mayhew, Geoff Whittle:
Inequivalent representations of matroids having no U3, 6-minor. J. Comb. Theory B 92(1): 55-67 (2004) - [j20]James F. Geelen, Petr Hlinený, Geoffrey P. Whittle:
Bridging Separations in Matroids. SIAM J. Discret. Math. 18(3): 638-646 (2004) - 2003
- [j19]James F. Geelen, Geoffrey P. Whittle:
Cliques in dense GF(q)-representable matroids. J. Comb. Theory B 87(2): 264-269 (2003) - [j18]James F. Geelen, A. M. H. Gerards, Geoffrey P. Whittle:
Disjoint cocircuits in matroids with large rank. J. Comb. Theory B 87(2): 270-279 (2003) - [j17]James F. Geelen, A. M. H. Gerards, Neil Robertson, Geoff Whittle:
On the excluded minors for the matroids of branch-width k. J. Comb. Theory B 88(2): 261-265 (2003) - [j16]James F. Geelen, Satoru Iwata, Kazuo Murota:
The linear delta-matroid parity problem. J. Comb. Theory B 88(2): 377-398 (2003) - 2002
- [j15]James F. Geelen, James G. Oxley, Dirk Vertigan, Geoffrey P. Whittle:
Totally Free Expansions of Matroids. J. Comb. Theory B 84(1): 130-179 (2002) - [j14]James F. Geelen, A. M. H. Gerards, Geoff Whittle:
Branch-Width and Well-Quasi-Ordering in Matroids and Graphs. J. Comb. Theory B 84(2): 270-290 (2002) - [j13]James F. Geelen, Bertrand Guenin:
Packing Odd Circuits in Eulerian Graphs. J. Comb. Theory B 86(2): 280-295 (2002) - [j12]James F. Geelen, Geoffrey P. Whittle:
Branch-Width and Rota's Conjecture. J. Comb. Theory B 86(2): 315-330 (2002) - 2001
- [j11]James F. Geelen, Geoffrey P. Whittle:
Matroid 4-Connectivity: A Deletion-Contraction Theorem. J. Comb. Theory B 83(1): 15-37 (2001) - 2000
- [j10]James F. Geelen:
An Algebraic Matching Algorithm. Comb. 20(1): 61-70 (2000) - [j9]James F. Geelen, A. M. H. Gerards, Ajai Kapoor:
The Excluded Minors for GF(4)-Representable Matroids. J. Comb. Theory B 79(2): 247-299 (2000) - [j8]James F. Geelen, James G. Oxley, Dirk Vertigan, Geoffrey P. Whittle:
On the Excluded Minors for Quaternary Matroids. J. Comb. Theory B 80(1): 57-68 (2000)
1990 – 1999
- 1999
- [j7]James F. Geelen:
On matroids without a non-Fano minor. Discret. Math. 203(1-3): 279-285 (1999) - 1998
- [j6]André Bouchet, William H. Cunningham, James F. Geelen:
Principally Unimodular Skew-Symmetric Matrices. Comb. 18(4): 461-486 (1998) - [j5]William H. Cunningham, James F. Geelen:
Integral Solutions of Linear Complementarity Problems. Math. Oper. Res. 23(1): 61-68 (1998) - 1997
- [j4]William H. Cunningham, James F. Geelen:
The Optimal Path-Matching Problem. Comb. 17(3): 315-337 (1997) - [j3]James F. Geelen:
A Generalization of Tutte's Characterization of Totally Unimodular Matrices. J. Comb. Theory B 70(1): 101-117 (1997) - 1996
- [c1]William H. Cunningham, James F. Geelen:
The Optimal Path-Matching Problem. FOCS 1996: 78-85 - 1994
- [j2]N. R. Achuthan, Lou Caccetta, P. Caccetta, James F. Geelen:
Computational methods for the diameter restricted minimum weight spanning tree problem. Australas. J Comb. 10: 51-72 (1994) - 1993
- [j1]James F. Geelen, R. Jaime Simpson:
A two dimensional Steinhaus theorem. Australas. J Comb. 8: 169-198 (1993)
Coauthor Index
aka: A. M. H. Gerards
aka: Geoffrey P. Whittle
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