Talks
You can find here the pdf files of various talks/poster/blackboard talks given in seminars, workshops, conferences...
2020
2019
- Central limit theorems via (weighted) dependency graphs.
These slides have been prepared for the Rencontres de Probabilités de Rouen, September 2019.
- Large permutations and permutons,
Workshop on "Asymptotic Algebraic Combinatorics", Banff, March 2019 and Conference Analysis of Algorithms, Marseille, June 2019.
- Brownian limits of large permutations in classes,
Workshop on "Stochastic processes, geometry and algebraic structures", Madhia, Tunisia, April 2019.
- Two first-order logics of permutations,
Journées de Combinatoire de Bordeaux, Bordeaux, February 2019.
2018
- Asymptotics for skew standard Young tableaux via bounds on characters,
Einstein Workshop on "Algebraic combinatorics", Berlin, November 2018.
- Universal limits of permutations in substitution-closed classes,
Workshop "Enumerative combinatorics", Oberwolfach, May 2018.
- Random factorizations of a permutation into transpositions,
SLC 80, Lyon, March 2018, Workshop "Symmetry and Randomness", Dublin, June 2018; Probability Seminar, Nancy, Oct. 2018; Journées MathSTIC, Paris-Nord, Oct. 2019.
(The associated movie can be found
here.)
2017
- What do random constraint permutations look like?, Colloquium, University of Fribourg, Switzerland, December 2017.
- Shifted symmetric functions, 79th Séminaire Lotharingien de Combinatoire, Bertinoro, Italy, September 2017.
- Lecture 1: the vanishing property and normalized characters;
- Lecture 2: multirectangular expansions;
- Lecture 3: Jack and Macdonald analogues.
- Mod-phi convergence and random permutations, Summer school in Villa Volpi, Laggo Maggiore, Italy, September 2017.
- Lecture 1: mod-phi convergence, examples and probabilistic estimates;
- Lecture 2: mod-phi convergence and dependency graphs;
- Lecture 3: permutons;
- Lecture 4: universal limits in substitution-closed classes.
- Weighted dependency graphs, ASEP and Ising model
Invited session Integrable probability, SPA conference, Moscow, July 2017.
2016
- Mod-phi convergence: Part 1 (examples and probabilistic estimates)
and Part 2 (dependency graphs), Workshop "Cumulants, Concentration and Superconcentration", Osnabrück,
Germany, December 2016.
- Cyclic inclusion-exclusion and the kernel of \(P\)-partitions,
talk, FPSAC 2016, Vancouver, Canada, July 2016.
- Cumulants of Jack symmetric functions and \(b\)-conjecture,
poster presentation, FPSAC 2016, Vancouver, Canada, July 2016.
- Weighted dependency graphs, combinatorics seminar,
Universitat Politècnica de Catalunya, Barcelona, November 2016 and
final conference of the Macada Project, Domaine de Chalès, Sologne, France, June 2016.
- Schützenberger's jeu de taquin,
Conference on the scientific legacy of Marcel-Paul Schützenberger, Bordeaux, March 2016.
2015
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Shifted Schur functions,
Discrete mathematics seminar, Universität Zürich, November 2015.
-
Jack symmetric functions and graphs on surfaces,
plenary talk, FPSAC, Daejon, Korea, July 2015.
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Cumulants and triangles in Erdős-Rényi random graphs,
Frontiers in Analysis and Probability, 1st Strasbourg/Zurich meeting, Strasbourg, February 2015 and probability seminar, University of Warwick, June 2015.
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Dual Combinatorics of Jack polynomials,
Discrete mathematics seminar, Universität Zürich, February 2015 (same talk as in Tours and Madrid, 2013).
2014
- Random combinatorial structures: graphs, permutations and representations, inaugural lecture (Antrittsvorlesung) as a professor in the University of Zurich, October 2014.
- Shifted Jack polynomials and multirectangular coordinates of Young diagrams, Séminaire Lotharingien de Combinatoire, 73rd edition, Strobl, Austria, September 2014. I have also done a more detailed version of this talk at Séminaire Combinatoire énumérative et analytique, LIAFA, Université Paris 7, October 2014.
- La plus longue sous-suite croissante d'une permutation aléatoire, Exposé donné à Mat'les vacances, destiné à des élèves en fin de première S, Val Cenis, Alpes, Août 2014.
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Quasi-symmetric functions as functions on Young diagrams, poster presented at FPSAC in Chicago, June 2014.
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Joint cumulants and spanning trees, Journées ALÉA, Marseille, March 2014.
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Random Representations of the symmetric group, mini-course given in workshop "Probability and representation theory in Edinburgh", February 2014.
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Cyclic inclusion-exclusion, Discrete mathematics seminar, Universität Zürich, February 2014 and Séminaire Calin, Université Paris 13, October 2014.
2013
- Dual combinatorics of Jack polynomials, workshop Recent Trends in Algebraic and Geometric Combinatorics, Madrid, November 2013 and workshop Combin'à Tours, Tours, July 2013.
- La plus longue sous-suite croissante d'une permutation aléatoire, Exposé au Mathematical Park, destiné à des étudiants en première année d'université/prépa, IHP, Paris, Novembre 2013.
- Éléments de Jucys-Murphy et polynômes de Kerov, Notes manuscrites pour le séminaire Chevalley, Paris 7, Novembre 2013.
- A multivariate hook formula for labelled trees, Séminaire Philippe Flajolet, IHP, Paris, October 2013 (more detailed version of the talk given in Canadam, see below).
- On Kerov polynomials for Jack characters, poster presented at FPSAC 2013, Paris, June 2013.
- A multivariate hook formula for labelled trees, Canadam, St John's, Newfoundland, Canada, June 2013.
- Une approche duale des représentations du groupe symétrique, series of lectures given in Collège de France, Jan/Feb 2013. See its specific web page.
2012
- Dual approach for Jack polynomials and cumulants of almost independent variables, Nagoya, July 2012.
- Asymptotic behaviour of some statistics in Ewens random permutations, Journées ALÉA, Marseille, mars 2012 and AofA conference, Montréal, June 2012.
- Quasi-symmetric functions on Young diagrams, Séminaire lotharingien de combinatoire, Ottrott, March 2012.
- A simple model of trees for unicellular maps, Séminaire Combinatoire énumérative et algébrique, Bordeaux, January 2012.
2011
- Inclusion/exclusion cyclique, Journées nationales du GT combinatoire algébrique du GDR-IM, Rouen, June 2011.
- Dual combinatorics of zonal polynomials, FPSAC 2011, Reykjavik, Islande, June 2011.
- Polynomial functions on Young diagrams and limit shape of Young diagrams, Seminar über stochastische Prozesse, Universität Zürich, April 2011.
- Sur les produits de longs cycles dans le groupe symétriques, Journées ALÉA, CIRM, Marseille, March 2011.
- Characters of symmetric groups, free cumulants and a combinatorial Hopf algebra, workshop "Bialgebras in free probability", Erwin Schroendinger Institute, Vienne, February 2011.
2010
- Approche algébrique des formules d'équerre, séminaire de combinatoire énumérative et analytique, LIAFA, Paris, December 2010.
- Asymptotics of characters and large Young diagrams, special session on Random structure in asymptotic representation theory, 34th International Conference on Stochastic Processes and Applications, Osaka, September 2010.
- Linear coefficients of Kerov's polynomials: bijective proof and refinement of Zagier's result, poster presented at FPSAC 2010, San Francisco.
- A combinatorial presentation of an algebra of functions on Young diagrams, Algebraic Combinatorics Seminar, University of Waterloo, June 2010 and University of Minnesota, Minneapolis, July 2010.
- Un problème combinatoire sur les graphes lié aux caractères du groupe symétrique, Séminaire du LaBRI, May 2010.
- Caracteres irreductibles du groupe symetrique et grands diagrammes de Young (2/2),
Séminaire Combinatoire énumérative et algébrique, Bordeaux, April 2010.
- Asymptotic of characters of symmetric groups and limit shape of Young diagrams,
64th Séminaire Lotharingien de Combinatoire, Lyon, March 2010.
- Caractères irreductibles du groupe symetrique et grands diagrammes de Young (1/2),
Séminaire Combinatoire énumérative et algébrique, Bordeaux, March 2010.
2009
- Énumération de certaines factorisations d'un long cycle,
Séminaire Combinatoire énumérative et algébrique, Bordeaux, December 2009.
- Large random Young diagrams and representation theory,
Workshop on Free Probability and Combinatorial Random Structures, Bielefeld, Allemagne, December 2009.
- Quelques avantages de Sage,
Petite école de Combinatoire, Bordeaux, octobre 2009. Presentation and software
demonstration (look here for the software demonstration, in French).
- Interprétation algébrique d'une identité combinatoire due à Greene,
Séminaire Combinatoire énumérative et algébrique, Bordeaux, septembre 2009.
- Application of graph combinatorics to rational identities of type A,
poster presented at FPSAC 2009, Linz, Austria, July 2009.
- Autour des éléments de Jucys-Murphy : équivalence de trois problèmes combinatoires,
Journées annuelles du GT Combinatoire Algébrique, Lyon, June 2009.
- Fonctions sur les diagrammes de Young : caractères du groupe symétriques et polynômes de Kerov,
Soutenance de thèse, Marne-La-Vallée, March 2009.
- Une variante du lemme des mariages liée aux polynômes de Kerov,
Journée de Combinatoire de Bordeaux, Bordeaux, February 2009.
2008
2007