Bijections for maps: beautiful and powerful.  Minicourse given at Ecole Normal Superieure de Lyon, for the workshop Random maps and matrices from a geometric perspective , May 2019. 

Chromatic polynomial, acyclic orientations and heap theory. Talk given at AMS-MMA Joint meeting, Baltimore, January 2019. 

A Tutte polynomial for directed graphs. Talk given at Brandeis University, Waltham, November 2018. 

Counting walks in the quarter plane. Talk given at the FPSAC conference 2016, Vancouver, July 2016. 

Deformation of the braid arrangement and trees. Talk given at MIT, Cambridge, February 2016. 

Differential Equations for Colored Maps . Talk given at Newton Institute, Cambridge UK, April 2015.

Symmetries in trees (Part 1 = multitype Cayley trees, Part 2= spanning trees of hypercube). Talk given at McGill University, Montreal, September 2013.

Unified bijective framework for planar maps. Talk given at the conference FPSAC 2013 (keynote speaker), Paris, June 2013. 

Counting one-face maps and one-face constellations. Talk given at the Workshop Journee Cartes, Paris, June 2013. 

Random Colored Maps . Talk given at Brandeis University, Waltham, February 2013. 

Shuffling properties of products of random permutations. Talk given at the SIAM Conference in Discrete Mathematics 2012, Halifax, June 2012. 

A master bijection for planar maps, and its applications. Talk given at UCLA, Los Angeles, March 2011.

Computing the moments of the GOE bijectively. Talk given at MIT, Cambridge, February 2011. 

A Short proof for Rayleigh's Theorem (a.k.a. Spitzer walk). A short talk given at Microsoft Research, Redmond, January 2011. 

Counting coloured maps: algebraicity results. Talk given at Institut Henri Poincare, Paris, November 2009. 

Scaling limit of random planar maps. Minicourse given at the Enumeration and randomness workshop , Temuco, November 2008.

A bijection for covered maps on orientable surfaces. Talk given at the Newton Institute , Cambridge, April 2008. 

Growth of minor-closed classes of graphs. Talk given at Humboldt University, Berlin, June 2007. 

Catalan intervals and realizers of triangulations. Talk given at CRM Combinatorics Seminar, Barcelona, May 2007. 

The Tutte polynomial and a bijection between subgraphs and orientations. Talk given at CRM Combinatorics Seminar, Barcelona, October 2006.

Solution to a problem arising from Mayer s theory of cluster integrals. Talk given at 57th Séminaire Lotharingien de combinatoire, Ottrot, October 2006.

Combinatoire des cartes et polynome de Tutte (French). My dissertation defense. LaBRI, Bordeaux, September 2006.

Kreweras walks and loopless triangulations. Talk given at MIT Combinatorics Seminar, Cambridge, March 2006.

Bijective counting of tree-rooted maps. Talk given at Waterloo University Combinatorics and Optimization Seminar, Waterloo, March 2006.

Comptage des triangulations de haut degre (French).  Talk given at Journees arbres et objets combinatoire, Bordeaux November 2004.