Paul Wollan

I completed my PhD in Algorithms, Combinatorics, and Optimization in 2005 at Georgia Tech. Robin Thomas was my thesis advisor. I spent 2006 as a Postdoctoral Fellow in the Department of Combinatorics and Optimization at the University of Waterloo. From 2007 - 2009, I was a Research Fellow under the support of the Alexander von Humboldt Foundation at the University of Hamburg in the research group of Reinhard Diestel.
Department of Computer Science
University of Rome
Via Salaria 113
00198 Rome
Italy
Phone: +39 06 49 91 84 25
Email: <last name> at di.uniroma1.it
Publications and Recent Manuscripts
An improved linear edge bound for graph linkages (with R. Thomas) European J. of Combinatorics, 26 (2005), 309 - 324.
Generation of simple quadrangulations of the sphere (with G. Brinkmann, S. Greenberg, C. Greenhill, B. McKay, and R. Thomas) Discrete Math., 305 (2005), 33-54.
Non-zero disjoint cycles in highly connected group labeled graphs (with K. Kawarabayashi) J. Combin. Theory Ser. B, 96 (2006), 296 - 301.
Proper minor-closed families are small (with S. Norine, P. Seymour, and R. Thomas) J. Combin. Theory Ser. B, 96 (2006), 754 - 757.
Extremal functions for shortening sets of paths Combinatorics, Probability, and Computing 15 (2006), 927 - 932.
The extremal function for 3-linked graphs (with R. Thomas) J. Combin. Theory Ser. B 98 (2008), 939 - 971.
A weaker version of Lovasz' path removal conjecture (with K. Kawarabayashi, O. Lee, and B. Reed) J. of Combin Theory Ser. B, 98 (2008), 972 - 979.
Extremal functions for rooted minors, J. Graph Theory, 58 (2008), 159-178.
Packing non-zero A-paths in an undirected model of group labeled graphs, to appear: J. Combin. Theory Ser. B.
Voting in agreeable societies (with D. Berg, S. Norine, F.E. Su, and R. Thomas), to appear: AMS Math. Monthly.
Bridges in highly connected graphs, submitted.
K6 minors in 6-connected graphs of bounded treewidth (with K. Kawarabayashi, S. Norine, and R. Thomas) submitted.
Packing cycles with modularity constraints, submitted.
K6 minors in large 6-connected graphs (with K. Kawarabayashi, S. Norine, and R. Thomas), submitted.
Articles in Preparation
On the excluded minor structure theorem for graphs of large tree width (with R. Diestel, K. Kawarabayashi, and T. Muller).
The Erdos-Posa property for clique minors in highly connected graphs (with R. Diestel and K. Kawarabayashi).
Finite connectivity in infinite matroids (with H. Bruhn, R. Diestel, and M. Kriesell).
Eliminating an even cycle matroid minor (with B. Guenin and I. Pivotto).
A Whitney-type theorem for even cycle matroids (with B. Guenin and I. Pivotto).