Transparencies of some talks
 25 years of LLT polynomials (LeclercFest, Caen, March 10, 2020)
 Combinatorial Hopf algebras, Strasbourg, September 46, 2013,
The mathematical legacy of JeanLouis Loday
 Noncommutative symmetric functions with many parameters, Cetraro, July 3, 2013,
Words, Codes, and Algebraic Combinatorics, (Christophe Reutenauer's 60th birthday)
 Réalisations polynomiales d'algèbres de Hopf combinatoires,
Séminaire Philippe Flajolet, January 27, 2012
 Vertex operators, Kronecker products, and Hilbert series
Sevilla, November 2009, Mathematical
Foundations of Quantum Information
 Noncommutative symmetric functions and combinatorial
Hopf algebras, Pisa, October 1216, 2009,
Asymptotics in Dynamics, Geometry and PDEs; Generalized Borel Summation
 Tree expanded series in some combinatorial Hopf
algebras, Krakow, November 2124, 2007,
Combinatorial Physics
 Commutative combinatorial Hopf algebras,
Nice, September 1014, 2007,
Shuffles, descents, and representations,
A conference in memory of Manfred Schocker
 Noncommutative symmetric Bessel functions,
Montréal, CRM, 9 May 2007,
Combinatorial Hopf algebras and Macdonald polynomials

Lie idempotents in descent algebras (lecture notes)
Workshop on Hopf Algebras and Props, Boston, March 5  9, 2007
Clay Mathematics Institute

Combinatorial Hopf algebras and inverse problems in representation theory,
The GarsiaFest
(FPSAC'05, Taormina, 24 June 2005)

LittlewoodRichardson, HallLittlewood and KazhdanLusztig,
Edinburgh, IMCS, 23 to 26 September 2003
Workshop on Jack, HallLittlewood and Macdonald Polynomials,
for I.G. Macdonald's 75th birthday

Ten years of noncommutative symmetric
functions, Moscow RussianFrench conference
Combinatorics, Mathematics, and Physics,14 May 2003,
Moscow Independent University

Noncommutative symmetric functions, Quasisymmetric functions and Descent
Algebras,
University of Wisconsin, Madison, June 1622, 2000,
Combinatorics of Lie type (conference in honor of Louis Solomon)