| 2012-01-30 | Tropical | Tutte polynomial, Whitney 2-isomorphism, and survey |
| 2012-02-07 | Paris VI | Groupoids, and Faà di Bruno formulae for Green functions in bialgebras of trees |
| 2012-02-08 | Paris VI | Théories topologiques de champs de dimension 2 et algèbres de Frobenius — once again |
| 2011-10-07 | UAB Topology Seminar | Symmetries of graphs and trees [Abstract] |
| 2011-07-08 | UAB Topology Seminar | Homotopical species |
| 2011-06-02 | Algebra and Combinatorics Seminar | Balmer's spectrum is Hochster dual to the Zariski spectrum |
| 2011-04-05 | UB | From sets and toposes to infinity groupoids and infinity toposes |
| 2011-03-31 | Algebra and Combinatorics Seminar | Spectra and supports |
| 2011-02-08 | Universität Regensburg | Categories of Feynman graphs --- from modular operads to quantum field theory |
| 2011-02-03 | Centenario de la R.S.M.E. (Ávila) | Categories of graphs and trees [Abstract] |
| 2010-11-18 | Algebra and Combinatorics Seminar | Connes-Kreimer Hopf algebra and renormalisation |
| 2010-11-11 | Algebra and Combinatorics Seminar | Incidence Hopf algebras [Notes for part 1] |
| 2010-10-14 | Feynman graphs (Clermont-Ferrand) | Categories of graphs and trees [Abstract] |
| 2010-06-24 | CT2010 (Genova) | Categorification of Hopf algebras of rooted trees [Abstract] |
| 2010-03-18 | DFT Zaragoza | Feynman graphs and compact symmetric multicategories |
| 2010-03-15 | Tropical | Classical examples of commutative monads II: linear algebra, affine geometry, convex geometry, semi-lattices, etc. |
| 2010-03-12 | Homotopical methods in geometry and algebra (Sevilla) | Joyal theorems for homotopical species [Abstract] |
| 2010-03-01 | Tropical | Classical examples of commutative monads I: linear algebra from the viewpoint of operads, monads, and Lawvere theories |
| 19-23 Oct. 2009 | Advanced Course on TQFTs (Almería) | Frobenius algebras and 2D topological quantum field theories (four lectures) |
| 12-14 Aug. 2009 | 2nd Seminar on Category Theory and Applications (Santa Marta, Colombia) | Minicourse on polynomial functors (three lectures) |
| 2009-08-10 | Bogotá | Topological quantum field theories and Fibonacci sequences |