Cryptography researcher

I am a member of the following research groups :

I also have worked in noncommutative geometry, geometric group theory and representation theory in several maths departments : UMPA (ENS de Lyon), University of Hawai'i at Manoa, Université de Lorraine and Université Paris 7 Diderot.

About

Publications

  • Coarse geometry of Hecke pairs and the Baum-Connes conjecture
    Pacific Journal of Mathematics 322-1 (2023), 21--37. DOI 10.2140/pjm.2023.322.21
    [journal] [arXiv]

  • Dynamic asymptotic dimension and Matui's HK conjecture (with Christian Bönicke, Jamie Gabe and Rufus Willett)
    Proceedings of the London Mathematical Society, Volume 126, Issue 4, Pages 1182-1253 (April 2023)
    [journal] [arXiv]

  • Topological property (T) for groupoids (with Rufus Willett).
    Annales de l'Institut Fourier, Tome 72 (2022) no. 3, pp. 1097-1148.
    [journal][arXiv]

  • Going-Down functors and the Künneth-formula for crossed products by ample groupoids (with Christian Bönicke).
    Transactions of the American Mathematical Society, 372 (2019), 8159-8194
    [journal] [arXiv]

  • Controlled K-theory for groupoids and applications to Coarse Geometry,
    Journal of Functional Analysis, Volume 275, Issue 7, October (2018), Pages 1756-1807
    [journal] [arXiv]

  • Controlled K-theory for groupoids and applications
    PhD thesis directed by Hervé Oyono-Oyono (Université de Lorraine) and Andrzej Zuk (Université Paris 7 - Diderot), defense on July 12, 2017.

    • Notes

  • Metric Geometry and Geometric Analysis (Oxford, MSRI Summer School, July 2022)

  • Obstruction to LLP for maximal C*-algebras, after Ioana, Spaas and Wiersma. Notes for the workshop Lifting for C*-algebras (ENS Lyon, Fall 2020)

  • Large scale geometry and operator algebras (UH Manoa, Graduate class, Spring 2020)

  • Weakly and non weakly dominated operators, after Tikuisis, Spakula and Zhang (NCG seminar of UH Manoa, Spring 2019).

  • Dynamical property (T) (NCG seminar of Texas AM, February 2019)

  • C*-simplicity, after Breuillard, Kalantar, Kennedy and Ozawa (NCG seminar of UH Manoa, Fall 2018).

    • Recorded talks

    Hecke pairs and K-theory
    2 december 2022
    IHES

    Large scale geometry of Hecke pairs
    21 July 2022
    Oxford

    Link to video here

    Coarse geometry of Hecke pairs
    31 march 2022
    Séminaire virtuel francophone Groupes et Géométrie

    ENS Lyon 2020-2023

    Préparation à l'agrégation de mathématiques (Leçons, écrits et oraux blancs)
    Probabilités et Statistiques (Option A, cours et TP Python)
    Groupe fondamental et Revêtements (Cours de Prémaster)

    University of Hawai'i at Manoa 2017-2020

    Math 649D, Large scale geometry and operator algebras (Spring 2020)
    Math 244, Calculus IV (Spring 2020, Fall 2019)
    Math 307, Linear algebra and differential equations (Spring 2019, Fall 2018, Spring 2018)
    Math 203, Calculus for Business and the Social Sciences (Fall 2017)

    Université de Lorraine 2014-2017

    2015-2017
    Travaux pratiques du cours Calcul Formel, Licence 3 de mathématiques
    Recitations and Colles in Licence 2 et 3 de mathématiques
    Préparation à l'agrégation externe of mathématiques, TP de l'option Probabilités et Statistiques, leçons d'analyse
    TD de Statistiques et séries temporelles, Master 1
    TD de Processus stochastiques et probabilités, Master 1

    2014-2015
    TP de LateX, Licence 2 de mathématiques
    TD et Colles en Licence 2 et 3 of Mathematiques
    TD de Statistiques et séries temporelles, Master 1
    TD de Processus stochastiques et probabilités, Master 1

  • Coarse Geometry and Dynamics (organizer)
    Conference in ENS Lyon, August 30 - September 1, 2023. Link here.

  • Soirées mathématiques de Lyon (organizer 2021-2023)
    Scientific conferences primarly directed towards undergraduates and general audience. More info on the website.
    Organization committee:
    Christophette Blanchet, École Centrale de Lyon
    Vincent Borrelli, Université Claude Bernard Lyon 1
    Denis Choimet, Lycée du Parc
    Clément Dell'Aiera, ENS de Lyon
    Régis Goiffon, Université Claude Bernard Lyon 1
    Emmanuel Jacob, ENS de Lyon
    Elsa Pagnoud, INSA Lyon

  • K-theory and C*-algebras (organizer, together with Rufus Willett)
    Conference at University of Hawai'i at Manoa, December 2 - 6, 2019. Link for the webpage here.

  • Rencontre annuelle des doctorants (organizer, with Matthieu Brachet)
    One-day conference for the mathematics graduate school of University of Lorraine, December 2017.

  • Referee (rapporteur) and jury member for the PhD thesis of Alexandre Zumbrunnen at University of Neuchâtel (Switzerland)
    Title: Propriété de Haagerup dynamique et Baum-Connes explicite pour certains produits semi-directs de \(\mathbb Z^2\) par \(\mathbb F_2\)
    Advisor: Alain Valette, Co-advisor: Paul Jolissaint, defense: July 8, 2022.

  • Reviewer for the following journals
    Journal of Operator Theory
    Journal of the Australian Mathematical Society
    Journal of Geometric Analysis
    Groups, Geometry and Dynamics

    •  Positions 
          
       2024             Cryptographic Engineer (French Government) & Associate Researcher (IRISA Rennes) 
      
    2020 - 2023         Caïman - Agrégé Préparateur (ENS de Lyon, UMPA, team Groups Geometry and Dynamics)
       
    2017 - 2020         Temporary assistant professor (University of Hawai'i at Manoa)
    
    2014 - 2017         Moniteur en mathématiques (Université de Lorraine)    
    
     Education 
    
    2014 - 2017         Thèse de mathématiques fondamentales (Université de Lorraine)
        
    2011 - 2014         ENS Rennes (élève normalien, mathématiques)
        
                        Agrégation de mathématiques (2013) 
    
                        ENSAE Paristech (ingénieur)
    
                        Master de mathématiques fondamentales (Université Paris Diderot)
    
    2007 - 2011         Classes préparatoires MP* (Lycée Henri Poincaré, Nancy)

    Miscellaneous

    Link here