research

a list of research works and projects together with a selection of talks

2022

  1. article
    Geometric Batyrev-Manin-Peyre for equivariant compactifications of additive groups
    Faisant, Loïs
    Beiträge zur Algebra und Geometrie / Contributions to Algebra and Geometry 2022

2023

  1. preprint
    Motivic distribution of rational curves and twisted products of toric varieties
    Faisant, Loïs
    arXiv preprint 2023
  2. PhD thesis
    Stabilisation phenomena in moduli spaces of curves
    Faisant, Loïs
    Université Grenoble Alpes 2023

PhD thesis

My PhD project concerned the study of stabilisation phenomena occuring in the moduli space of rational curves on a nice variety (typically, a Fano variety), or more generally the moduli space of sections of a nice family above a smooth projective irreducible curve.

In my PhD thesis, I formulate a geometric/motivic analogue of the Batyrev-Manin-Peyre conjectures unsing the tools of motivic integration. One asks about the asymptotic behaviour, in a well-chosen ring of varities, of the class of the moduli space of curves of arbitrary large degree. These predictions have to be understood as questions or principles concerning the distribution of curves on Fano-like varieties.

Then I verify the validity of these predictions for certain classes of varieties such as equivariant compactifications (vector spaces, split torus) or twisted products obtained from them.

Keywords: moduli space, rational curves, Fano varieties, motivic Euler product.

Ce projet doctoral était financé par une allocation ministérielle AMX.

talks

upcomming talks

past talks

  • 2024.02.06 Séminaire Géométrie, LMV, Versailles

  • 2023.12.15 Séminaire Géométries, ICJ, Lyon
  • 2023.11.15 Browning Group Working Seminar, ISTA, Klosterneuburg
  • 2023.11.10 Séminaire de Géométrie, IMB, Bordeaux
  • 2023.10.26 Séminaire Algèbre Géométrie Algébrique Topologie Algébrique, IMAG, Montpellier
  • 2023.10.20 Séminaire Variétés Rationnelles, Sorbonne Université, Paris
  • 2023.10.13 Séminaire de topologie et géométrie algébriques, LAREMA, Angers
  • 2023.07.03 Soutenance de thèse, Phénomènes de stabilisation dans des espaces de modules de courbes, Institut Fourier, Grenoble
  • 2023.05.26 Séminaire Géométrie et Singularités, IRMAR, Rennes
  • 2023.05.16 Groups, Arithmetic & Algebraic Geometry Seminar, EPFL

  • 2022.12.09 Séminaire de théorie des nombres, Bordeaux.
  • 2022.11.28 Algebraic Geometry and Complex Geometry meeting, CIRM, Asymptotic behaviour of rational curves. Video.
  • 2022.06.16 Comptage de courbes rationnelles de grand degré, Séminaire Théorie des Nombres, Institut Fourier
  • 2022.04.07 Comportements asymptotiques de courbes rationnelles, Séminaire Géométrie, Laboratoire de Mathématiques de l’Université Savoie Mont Blanc (LAMA)

  • 2021.10.27 Asymptotic behaviour of rational curves, PhD Days, Institut Fourier
  • 2020.12.10 Rational curves : asymptotic behaviour of moduli spaces, Comprehensible seminar (séminaire des doctorants de l’Institut Fourier)

additional stuff

my master 2 thesis (in French).