Bienvenue sur la page web professionnelle de Thomas Gobet !
Maître de conférences HDR
Adresse e-mail : thomas.gobet [\ldots] univ-tours.fr
Adresse postale :
Institut Denis Poisson, CNRS UMR 7013
Faculté des Sciences et Techniques
Université de Tours
Parc de Grandmont
37200 TOURS, France
Bureau : E2160
Téléphone : (+33) 2 47 36 71 11
Quelques responsabilités
- Co-organisateur du séminaire SPACE
- Responsable de l’axe thématique « Théorie des groupes » du réseau thématique Algèbre (ex-GDR TLAG).
- Membre élu du conseil de laboratoire de l’IDP (depuis janvier 2024).
- Co-organisateur de l’école d’hiver Winterbraids XII (Tours, février 2023) du GDR Tresses.
- Comités de sélection MCF: Tours (2023), Calais (2024).
Quelques exposés récents
- Bruhat orders, fixed-point subgroups, and orbit closures, Conférence Hecke algebras and applications (Spetses, Juillet 2023).
- On some lattices arising in combinatorial group theory, Workshop de l’ANR Cortipom (Luminy, Juillet 2023).
- Toric reflection groups, Workshop Algebraic Combinatorics of the Symmetric Group and Coxeter Groups II (Cetraro, Juillet 2022).
- Groupes de tresses, groupes d’Artin, groupes de Garside : une introduction, Séminaire Bourbaki du Vendredi (Paris, Juin 2022).
- 2-braid groups and positivity phenomenons in Hecke and Temperley-Lieb algebras, Conférence Braids in Representation Theory and Algebraic Combinatorics (Providence, Février 2022).
- Torus knot groups, Garside groups, complex reflection groups, Conférence Braids and Beyond en mémoire de Patrick Dehornoy (Caen, Septembre 2021).
Notes de cours et mini-cours de niveau recherche
- Garside monoids and groups (Tours, 2022-2023; course notes still not complete ! Comments welcome).
- Braid groups (University of Sydney, 2018. Avec G. Williamson).
- Mikado braids, Soergel bimodules, and positivity in Hecke and Temperley-Lieb algebras (HIM Bonn, 2017).
Enseignement
Groupe de travail d’algèbre
Encadrement de thèses
- Igor Haladjian (80%, depuis Octobre 2022)
Preprint : A combinatorial generalisation of rank two complex reflection groups via generators and relations (2024). - Jad Abou-Yassin (50%, depuis Septembre 2023)
Publications
Articles. Published versions may differ from arxiv versions. If you need a copy of one of the following papers please send me an email.
- Categorification of the Temperley-Lieb algebra by bimodules, Journal of Algebra 419 (2014), 277-317. arxiv. talk.
- Noncrossing partitions and Bruhat order (with Nathan Williams), European Journal of Combinatorics 53 (2016), 8-34. arxiv. talk.
- Noncrossing partitions, fully commutative elements and bases of the Temperley-Lieb algebra, Journal of Knot Theory and its Ramifications 25 (2016), no. 6, 27 pp. arxiv. talk.
- Dual braid monoids, Mikado braids and positivity in Hecke algebras (with François Digne), Math. Z. 285 (2017), no. 1-2, 215-238. arxiv. talk.
- On the Hurwitz action in finite Coxeter groups (with Barbara Baumeister, Kieran Roberts, Patrick Wegener), Journal of Group Theory 20 (2017), no.1, 103-131. Link to the computer programs we used in this paper. arxiv. talk.
- Twisted filtrations of Soergel bimodules and linear Rouquier complexes Journal of Algebra 484 (2017), 275-309. arxiv. talk.
- On cycle decompositions in Coxeter groups, Séminaire Lotharingien de Combinatoire 78B (2017), Article #45, 12 pp. arxiv. talk.
- Simple dual braids, noncrossing partitions and Mikado braids of type D_n (with Barbara Baumeister), Bull. of the London Math. Soc. 49 (2017), no. 6, 1048-1065. arxiv. talk.
- On generalized categories of Soergel bimodules in type A_2 (with Anne-Laure Thiel), C. R. Acad. Sci. 356 (2018), no. 3, 258-263. arxiv.
- Dual Garside structures and Coxeter sortable elements, J. Comb. Algebra 4 (2020), 167-213. arxiv. talk.
- A Soergel-like category for complex reflection groups of rank one (with Anne-Laure Thiel), Math. Z. 295, 643–665 (2020). arxiv. talk.
- Coxeter-Catalan combinatorics and Temperley-Lieb algebras, Algebr. Represent. Theory 24 (2021), 169-201. arxiv.
- Braid groups of normalizers of reflection subgroups (with Anthony Henderson and Ivan Marin), Ann. Inst. Fourier 71 (2021), no. 6, 2273-2304. arxiv.
- Parametrization, structure and Bruhat order of certain spherical quotients (with Pierre-Emmanuel Chaput and Lucas Fresse), Represent. Theory 25 (2021), 935-974. arxiv. colloquium-style talk.
- On some torus knot groups and submonoids of the braid groups, Journal of Algebra 607 (2022), Part B, 260-289. arxiv. talk. Addendum.
- Hecke algebras of normalizers of parabolic subgroups (with Ivan Marin), Algebr. Represent. Theory 26 (2023), 1609–1639. arxiv.
- Toric reflection groups, J. Aust. Math. Soc. 116 (2024), no. 2, 171–199. arxiv. talk.
- A new Garside structure on torus knot groups and some complex braid groups, J. Knot Theory Ramifications 32 (2023), no. 13, Paper No. 2350094, 36 pp. arxiv.
- Non symmetric Cauchy kernel, crystals and last passage percolation (with Olga Azenhas and Cédric Lecouvey), Tunisian Journal of Mathematics 6 (2024), Issue 2, 249-297.
- On maximal dihedral reflection subgroups and generalized noncrossing partitions, accepted for publication in Proceedings of the AMS.
- Odd and even Fibonacci lattices arising from a Garside monoid (with Baptiste Rognerud), accepted for publication in Algebra Universalis. talk.
- Elements of minimal length and Bruhat order on fixed point cosets of Coxeter groups (with Nathan Chapelier), accepted for publication in Algebraic Combinatorics.
Autres documents
- Reflection groups, braid groups, Hecke algebras and categories, Thèse d’habilitation, Soutenue en Décembre 2023 à Tours.
- Bases of Temperley-Lieb algebras, Thèse de doctorat, Soutenue en Septembre 2014 à Amiens.
Mes collaboratrices et collaborateurs
Olga Azenhas, Barbara Baumeister, Nathan Chapelier-Laget, Pierre-Emmanuel Chaput, François Digne, Lucas Fresse, Anthony Henderson, Cédric Lecouvey, Ivan Marin, Kieran Roberts, Baptiste Rognerud, Anne-Laure Thiel, Patrick Wegener, Nathan Williams.