Doriann Albertin

doriann dot albertin at u-bordeaux dot fr
Bureau 352, LaBRI, domaine universitaire, 351 cours de la Libération, 33405 Talence

I am a postdoctoral researcher in the team Combinatoire et Interactions of the department Combinatoire et Algorithmique in the Laboratoire Bordelais de Recherche Informatique (LaBRI), at Université de Bordeaux .

Research interests

I focus on enumerative, geometric and algebraic combinatorics.
Objects I usually interact with are posets, (semidistributive) lattices, arc diagrams and weak orders on permutations; polytopes (permutohedra, associahedra, quotientopes...), polytopal fans and simplicial complexes; combinatorial Hopf algebras.

Publications

• Removahedral Congruences versus Permutree Congruences, with Vincent Pilaud and Julian Ritter, in The Electronic Journal of Combinatorics (and FPSAC 2021 extended abstract, talk).
• The Canonical Complex of the Weak Order, with Vincent Pilaud, in Order (and FPSAC 2022 extended abstract, talk).

Past occupation

I completed my PhD. between 2019 and 2022 under the supervision of Jean-Christophe Novelli and Vincent Pilaud, in the Combinatoire Algébrique et Calcul Symbolique team (COMBI), in the Laboratoire d'Informatique Gaspard Monge (LIGM), at Université Gustave Eiffel (UGE).

Seminars

Along with Germain Poullot and Eva Philippe, we founded the student seminar DGeCo (Doctorants en Géométrie Combinatoire), where I was an organizer between October 2020 and September 2022.

Along with Maxime Clenet and Hélène Langlois, we founded the LIGM PhD. student seminar, where I was an organizer between September 2021 and September 2022.

Talks

• Type Cones of Permutree fans, 2020-04-07, (Polytop)ics.
• Cônes de type des permutarbrèdres, 2020-12-17, DGeCo.
• Kreweras Complement of a Family of Semidistributive Lattices, 2021-09-22, Séminaire Doctorant du LIGM.
• Kreweras Complement of a Family of Semidistributive Lattices, 2021-09-30, DGeCo.
• Type Cones of Permutree fans, 2022-01-12, FPSAC 2021 (video).
• The Canonical Complex of the Weak Order, 2022-07-19, FPSAC 2022 (video).
• The Canonical Complex of the Weak Order, 2022-09-15, séminaire combinatoire de l'IRIF.
• Distinguishing posets with quasisymmetric functions, 2022-12-01, DGeCo.
• A quasisymmetric invariant for families of posets, 2023-01-31, Journées Combinatoires de Bordeaux.

Posters

• The Canonical Complex of the Weak Order, presented at ECCO 2022.
• (upcomming) Quasisymmetric invariant for families of posets, to be presented at SLC 89.

Teaching

Throughout my doctorate, I have taught computer science practical sessions (TP) and tutorials (TD) to first cycle students at UGE in the following courses:

• Databases (UGE L2 TP 2019, ESIPE INFO2 TP 2020, UGE L2 TD 2021),
• Extensive C programming (UGE L2 TP 2019),
• Basic algoritmics (UGE L1 TP 2020),
• Computer systems architecture (UGE L2 TP 2020).

In addition, I gave in spring 2022 a lecture in linear algebra to ESIPE first year students.

As a postdoctoral researcher, I am monitoring groups of master students' programming projects.