I am Professor and ARC Future Fellow in the Discrete Mathematics Research Group of the School of Mathematical Sciences at Monash University in Melbourne, Australia. I am co-Director of the Mathematical Research Institute MATRIX.

My research interests lie in discrete mathematics and theoretical computer science, especially structural graph theory, extremal graph theory, geometric graph theory, graph colouring, graph drawing, and combinatorial geometry. Here are a few of my favourite open problems.

News and Events

• 5th International Combinatorics Conference, Monash University, December 2017
• Banff Workshop on Geometric and Structural Graph Theory, August 2017
• Oxford One-Day Meeting in Combinatorics, May 2017
• New paper Improper colourings inspired by Hadwiger's conjecture with Jan van den Heuvel, April 2017.
• Barbados Graph Theory Workshop, March 2017
• New paper Nonrepetitive colourings of graphs excluding a fixed immersion or topological minor with Paul Wollan, January 2017.
• New paper Colourings with bounded monochromatic components in graphs of given circumference with Bojan Mohar and Bruce Reed, January 2017.
• January 2017: The CMSA has a new url and website: combinatorics-australasia.org.