Mathieu VALLÉE

Subjects of interest

Combinatorial optimization, toric topology, PL-geometry, matroid theory.

Presentation

I am a Ph.D. student in Computer Science and Mathematics at the "Laboratoire d'Informatique de Paris Nord" (LIPN), supervised by Dr. Roland Grappe and Pr. Bruno Vallette. My Ph.D. subject is "Box-integrality and the integer decomposition property". It gathers combinatorial optimization, polyhedral geometry, toric geometry and operad theory.

Contact

• Email: vallee [at] lipn.fr
• Tel: +337 81 14 19 45
• Address: Office B103, LIPN, Université Sorbonne Paris Nord, 99 av. Jean-Baptiste Clément - 93430 Villetaneuse

Education

• 2022-Now: Ph.D. course, Université Sorbonne Paris Nord, LIPN (Advisors: Roland Grappe, Bruno Vallette)
• 2022: Master degree in fundamental Mathematics, Université de Rennes 1 & ENS de Rennes, with greatest honors
• 2020-2021: Exchange program at Ajou University & research project in toric topology with Pr. Suyoung Choi, "On the enumeration of (real) toric manifolds of Picard number 4"
• 2019: Bachelor degree in Mathematics, Université de Rennes 1 & ENS de Rennes
• 2012-2015: Lycée Privé Jeanne d'Arc Caen

Office buddies

Victor Nador, Daria Pchelina, Théophile Buffière Alexandre Dupont-Bouillard

Preprints

2023

• Suyoung Choi, Hyeontae jang, Mathieu Vallée, The characterization of (n−1)-spheres with n+4 vertices having maximal Buchstaber number, ArXiv:2301.00806

Publications

2022

• Suyoung Choi, Mathieu Vallée, An algorithmic strategy for finding characteristic maps over wedged simplicial complexes, Pacific J. Math., Vol. 320-1, arXiv link
• Suyoung Choi, Mathieu Vallée, Cohomological rigidity of the connected sum of three real projective spaces, Proc. Steklov Inst. Math., Vol. 317.

Conferences

2023

• Rencontres Doctorales Lebesgue 2023, Université de Nantes, Sur des outils de combinatoire et leurs applications

2022

• The 6th Korea Toric Topology Workshop, KAIST, Daejeon, On the enumeration of (real) toric manifolds of Picard number 4

2021

• Spring meeting of the KMS, Contributed talk in Topology, On the enumeration of (Real) Toric manifolds of Picard number 4
• Toric Topology 2021 in Osaka,Toward the enumeration of Picard number 4 (Real) Toric manifolds