Controlling representations of frame matroids. Canadian Discrete and Algorithmic Mathematics Conference (CanaDAM), University of Winnipeg; 6 June 2023

The class of bicircular matroids has only a finite number of excluded minors. The Matroid Union Graphs and Matroids Seminar, Online; 12 April 2021

Matroids from biased graphs: frame, lift, quasi-graphic, and a common generalisation. Special Session on Algebraic Combinatorics on the Occasion of the 75th Birthday of Thomas Zaslavsky, AMS Fall Eastern Sectional Meeting, Binghamton University; 12 October 2019

Describing quasi-graphic matroids. Canadian Discrete and Algorithmic Mathematics Conference (CanaDAM), Simon Fraser University; 31 May 2019

On representing matroids by matrices and graphs: two sides of the same coin. Canadian Mathematical Society Winter Meeting, Vancouver; 9 December 2018

On excluded minors for classes of graphical matroids. 2017 International Workshop on Structure in Graphs and Matroids (SiGMa), University of Waterloo; 17 July 2017 

Effective versions of two theorems of Rado. Victoria University of Wellington Matroid Group Seminar; 8 February 2017. 

Almost balanced biased graph representations of frame matroids.  New Zealand Mathematical Society Colloquium, Victoria University of Wellington; 5 December 2016

Matrix Representations of matroids of biased graphs correspond to gain functions.  Victoria University of Wellington Matroid Group Seminar; 8 September 2016 

Effective versions of two theorems of Rado. 2016 International Workshop on Structure in Graphs and Matroids, Eindhoven University of Technology, The Netherlands; 28 July 2016 

Representations of frame matroids over fields via graphs. SIAM Conference of Discrete Mathematics, Georgia State University; 8 June 2016

Excluded minors of connectivity 2 for the class of frame matroids. Connections in Discrete Mathematics: A celebration of the work of Ron Graham, Simon Fraser University; 18 June 2015

Biased graphs, group-labelled graphs, and well-quasi-ordering. Canadian Discrete and Algorithmic Mathematics Conference (CanaDAM), University of Saskatchewan; 3 June 2015 (Shorter version of the talk below) 

Biased graphs, group-labelled graphs, and well-quasi-ordering. Discrete Mathematics Seminar, Simon Fraser University; 23 September 2014 (Longer version of the talk above) 

On 2-separated excluded minors for the class of frame matroids. 37th Australasian Conference on Combinatorial Mathematics and Combinatorial Computing, University of Western Australia; 9 December 2013

Unique graph representations of bias matroids. CanaDAM (Canadian Discrete and Algorithmic Mathematics Conference), Memorial University of Newfoundland; 11 June 2013

On 2-separated excluded minors for the class of frame matroids. Canadian Math Society Summer Meeting, Dalhousie University; 7 June 2013

Rearranging edge sets of cycles in graphs. Prairie Discrete Math Workshop, Thompson Rivers University; 3 May 2013

Unique graph representations of frame matroids. Coast Combinatorics Conference, University of Victoria, October 2012

Close to unique biased graph representations of bias matroids. Third Workshop on Graphs and Matroids, Maastricht, The Netherlands, July 2012

On the hamiltonicity of line graphs of locally finite, 6-edge-connected graphs. Canadian Discrete and Algorithmic Mathematics Conference (CanaDAM); June 2011

Mathematics Lecture Techniques: Shock and Awe vs. Awe and Wonder. Sharing Mathematics Conference, Thompson Rivers University; May 2009

On Hamilton circles in infinite graphs. Coast Combinatorics Conference, University of Victoria; February 2009

Hamiltonicity in infinite graphs. Thompson Rivers University Mathematics Seminar; October, 2008