| 2014-05-06 | UFPE (Recife) | Polynomial functors, infinity-groupoids, and homotopy type theory II |
| 2014-04-24 | UFPE (Recife) | Polynomial functors, infinity-groupoids, and homotopy type theory I |
| 2013-11-28 | Workshop on Algebraic and Geometric Combinatorics (Madrid) | Decomposition spaces, incidence algebras, and Moebius inversion [Abstract] |
| 2013-06-07 | CMS Summer Meeting, special session on higher categories (Halifax, Canada) | Incidence algebras and Moebius inversion in Rezk categories and decomposition spaces [Abstract] |
| 2013-06-01 | Foundational Methods in Computer Science (Mount Allison, Canada) | Polynomial functors over groupoids: from program semantics to quantum field theory -- and back (two lectures) [Abstract] |
| 2013-05-02 | Nice | Polynomial Functors over Groupoids: from Program Semantics to Quantum Field Theory [Abstract] |
| 2013-03-21 | Mathematical Physics Seminar, ETH Zürich | Polynomial functors over groupoids, and combinatorial Dyson-Schwinger equations [Abstract] |
| 2013-03-01 | UAB Topology Seminar | Homotopy Type Theory II: Inductive and higher inductive types |
| 2013-02-25 | Institute for Advanced Study, Princeton | Joyal Theorems for Homotopical Species |
| 2013-02-21 | Institute for Advanced Study, Princeton | Locally cartesian closed infinity categories II |
| 2013-02-18 | Institute for Advanced Study, Princeton | Locally cartesian closed infinity categories I |
| 2013-02-11 | UB | Infinity toposes: Giraud axioms and object classifiers |
| 2013-02-01 | UAB Topology Seminar | Homotopy Type Theory I: Overview and syntax |
| 2012-11-23 | ICMAT, Madrid | Möbius inversion in general categories [Abstract] |
| 2012-10-19 | UAB Topology Seminar | Data types with symmetries and polynomial functors over groupoids |
| 2012-10-12 | Mathematical Aspects of Hadron Physics (ECT*, Trento) | Groupoids and polynomial functors in the combinatorics of Quantum Field Theory [Abstract] |
| 2012-06-21 | Nice | Groupoids, and Faa di Bruno formulae for Green functions in bialgebras of trees [Abstract] |
| 2012-06-06 | 28th Conference on the Mathematical Foundations of Programming Semantics (Bath) | Data types with symmetries and polynomial functors over groupoids [Abstract] [Conference paper] |
| 2012-05-11 | Regensburg | Faà di Bruno formulae for Green functions in bialgebras of trees [Abstract] |
| 2012-02-13 | Tropical | Tutte polynomial survey, part 2: graph colouring and Potts model |
| 2012-02-08 | Paris VII | Théories topologiques de champs de dimension 2 et algèbres de Frobenius — once again |
| 2012-02-07 | Paris VII | Groupoids, and Faà di Bruno formulae for Green functions in bialgebras of trees [Abstract] |
| 2012-01-30 | Tropical | Tutte polynomial, Whitney 2-isomorphism, and survey |
| 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 | 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 |
| 2009-07-03 | B-Top | Feynman graphs and modular operads |
| 2009-05-08 | UAB | Baez-Dolan construction and stable opetopes |
| 2009-04-30 | Opérades 2009 (Luminy) | Feynman graphs, and nerve theorem for modular operads [Abstract] |
| 2009-04-08 | Quantum Physics and Logic VI (Oxford) | Feynman graphs and compact multicategories [Abstract] |
| 2009-04-06 | Leicester | Feynman graphs, and nerve theorem for modular operads |
| 2009-03-20 | UAB | Globular operads and weak omega-categories 2 |
| 2009-03-13 | UAB | Globular operads and weak omega-categories 1 |
| 2009-02-13 | B-Top | The sugar-free Deligne conjecture (no little-discs, no braces, differentials or signs) |
| 2009-01-29 | Chambéry | Introduction to the theory of polynomial functors (with emphasis on applications to logic) [Abstract] |
| 2008-11-07 | B-Top | Stasheff operad and Boardman-Vogt resolution |
| 2008-09-03 | CATS3: Higher categorical structures in algebraic geometry (Pisa) | Feynman graphs, and nerve theorem for modular operads [Abstract] |
| 2008-06-03 | Utrecht | Polynomial functors and trees |
| 2008-04-19 | Higher Operads Week | Combinatorics of opetopes [Abstract] |
| 2008-03-22 | PSSL87 (Patras) | Polynomial functors and trees [Abstract] |
| 2008-02-04 | CRM: Advanced course | Formal construction of Moerdijk and Weiss's Ω |
| 2007-11-28 | CRM | Polynomial functors and trees (continued) |
| 2007-11-19 | CRM | Polynomial functors and trees |
| 2007-10-29 | CRM | Prime spectrum and supports of a tensor triangulated category, according to Balmer |
| 2007-09-27 | CRM | Topological quantum field theories and Fibonacci sequences |
| 2007-06-06 | SECA4 | Algebraic geometry over symmetric monoidal categories (after Toën and Vaquié) [Abstract] |
| 2007-05-25 | B-Top | Polynomial functors, trees, and coloured operads |
| 2007-03-24 | PSSL85 (Nice) | Polynomial functors and trees [Abstract] |
| 2007-03-12 | Tropical | Riemann-Roch for finite graphs |
| 2007-03-01 | UAB: Sheaves sem. | Stacks (introduction to ~, in one hour) |
| 2007-01-12 | B-Top | Infinity-1-categories: overview |
| 2007-01-11 | Singular meeting (Barcelona) | Counting curves via lattice paths (after Mikhalkin) |
| 2006-12-20 | UB | Factorisation systems |
| 2006-12-13 | UB | The classical theory of monads |
| 2006-10-26 | TTT57 (Leicester) | Polynomial functors, trees, and opetopes [Abstract] |
| 2006-07-21 | Barcelona Topology Workshop 2006 | Commutativity in double semigroups and two-fold monoidal categories [Abstract] |
| 2006-05-12 | B-Top | Brave new Gorenstein algebras |
| 2006-04-05 | CRM | Study group on cross functors: Cross functors |
| 2006-03-15 | CRM | Study group on cross functors: The language of 2-categories |
| 2006-03-13 | Tropical | Semi-rings and Zariski categories |
| 2006-02-27 | Tropical | Introduction to Zariski categories |
| 2006-02-02 | B-Top | Morita theory for torsion and complete modules |
| 2006-01-24 | UB | K-theory and simplicial localisation |
| 2006-01-13 | UB-AlgGeom | Polynomial functors, negative sets, and moduli of punctured Riemann spheres [Abstract] |
| 2005-12-19 | Tropical | Base change for schemes under Spec(Z) (part 2) |
| 2005-12-12 | Tropical | Base change for schemes under Spec(Z) |
| 2005-11-10 | B-Top | Matlis duality (part 2) |
| 2005-11-03 | B-Top | Matlis duality |
| 2005-07-21 | StreetFest (Sydney/Canberra) | Weak units and homotopy 3-types [Abstract] |
| 2005-06-29 | Tropical | Numbers of tropical plane curves through points in general position |
| 2005-06-16 | B-Top | Weak units and homotopy 3-types |
| 2005-04-27 | Tropical | The Legendre transform |
| 2005-04-06 | Tropical | Tropical enumerative geometry (part 2) |
| 2005-03-29 | Tropical | Tropical enumerative geometry |
| 2005-02-25 | UB-AlgGeom | Quantum cohomology and characteristic numbers [Abstract] |
| 2004-11-11 | CIRGET Junior | Polynomial functors |
| 2004-11-02 | CTRC Seminar (McGill) | On the notion of unit in monoidal categories and monoidal 2-categories [Abstract] |
| 2004-10-16 | Categories Oktoberfest (Montréal) | Weak units and realisation of homotopy 3-types [Abstract] |
| 2004-06-16 | IMA 2004 Summer Program on n-Categories: Foundations and Applications (Minneapolis) | Topological quantum field theories |
| 2004-06-02 | CIRGET Junior | Topological quantum field theories II |
| 2004-05-26 | CIRGET Junior | Topological quantum field theories I |
| 2004-02-26 | CIRGET Junior | Géométrie énumerative et théorie d'intersection II |
| 2004-02-20 | Séminaire CIRGET | Quantum cohomology and characteristic numbers |
| 2004-02-19 | CIRGET Junior | Géométrie énumerative et théorie d'intersection I |
| 2003-07-24 | Workshop on Categorification and Higher-Order Geometry (Lisbon) | Weak identity arrows in higher categories [Abstract] |
| 2003-05 | CATS2: Higher categorical structures in algebraic geometry (Nice) | A notion of weak identity arrows in higher categories [Abstract] |
| 2003-04-09 | Algebra Seminar (Aarhus) | Weak identity arrows in higher categories |
| 2003-03-20 | Séminaire de Géométrie Algébrique (Nice) | Weak identity arrows in higher categories |
| 2002-10 | Porto | A fórmula de Kontsevich para curvas racionais planas - uma introdução à cohomologia quântica (minicourse, 4 lectures) |
| 2002-09-25 | School and conference on intersection theory and moduli (ICTP, Trieste) | Tangency quantum cohomology |
| 2002-07-18 | Workshop on Frobenius manifolds, quantum cohomology, and singularities, in honour of Yu. I. Manin's 65th birthday (MPI, Bonn) | Tangency quantum cohomology |
| 2002-03-07 | Séminaire de Géométrie Algébrique (Nice) | Le nombre de coniques 5-fois tangentes à une courbe plane générique (d'après A. Gathmann) [Slides (not used)] |
| 2002-01 | UFPE Summer School (Recife) | Minicourse (7 lectures): Frobenius algebras and 2D topological quantum field theories |
| 2001-01-25 | Séminaire de Géométrie Algébrique (Nice) | Tangency quantum cohomology |
| 2000-07-11 | Workshop on artinian Gorenstein rings and Frobenius algebras (KTH, Stockholm) | Introduction to formal Frobenius manifolds |
| 2000-05-28 | NORDAG meeting in Algebraic Geometry (Stockholm) | Tangency quantum cohomology [Abstract] |
| 2000-05-22 | Algebraic Geometry Seminar (Oslo) | Tangency quantum cohomology |
| 2000-05-15 | Seminar on Gromov-Witten theory (KTH, Stockholm) | The virtual class of the space of conics having sixth order contact with a plane curve |
| 2000-05-10 | Seminar on Gromov-Witten theory (KTH, Stockholm) | On Gathmann's paper Absolute and relative Gromov-Witten invariants of very ample hypersurfaces (Part 3) |
| 2000-05-08 | Seminar on Gromov-Witten theory (KTH, Stockholm) | On Gathmann's paper Absolute and relative Gromov-Witten invariants of very ample hypersurfaces (Part 2) |
| 2000-05-03 | Seminar on Gromov-Witten theory (KTH, Stockholm) | On Gathmann's paper Absolute and relative Gromov-Witten invariants of very ample hypersurfaces (Part 1) |
| 2000-05-02 | Seminar on Gromov-Witten theory (KTH, Stockholm) | Gromov-Witten potential, generating functions and differential equations |
| 2000-04-17 | Seminar on Gromov-Witten theory (KTH, Stockholm) | Topological recursion (genus zero) |
| 2000-04-10 | Seminar on Gromov-Witten theory (KTH, Stockholm) | Psi classes and gravitational descendants |
| 1999-07 | ALGA III: Algebra Comutativa e Geometria Algébrica (UNICAMP, Campinas) | Enumeratively well-behaved divisor classes on the space of stable maps |
| 1999-07 | 22º Colóquio Brasileiro de Matemática (IMPA, Rio de Janeiro) | Kontsevich’s formula for rational plane curves (5 lectures, with Israel Vainsencher) |
| 1999-03-24 | Géométrie Algébrique en Liberté VII (Luminy) | Counting bitangents of a smooth plane curve via stable maps |