Summary:
My name is Adrien (Ange André) BUSNOT LAURENT. I am a permanent researcher (chargé de recherche) at INRIA Rennes in the MINGuS team.Prior to that, I was a Postdoctoral fellow at the University of Bergen, where I worked as a member of the project CODYSMA (Computational Dynamics and Stochastics on Manifolds) with Hans Z. Munthe-Kaas, and I did my PhD in Mathematics at the University of Geneva under the supervision of Gilles Vilmart.
I won the SWICCOMAS prize and the Henri Fehr prize for my Ph.D. thesis, and received the ANR JCJC MaStoC (2026-2029).
Here is my Curriculum Vitae.
Research interests:
Topics:- Numerical integration of stochastic differential equations (SDEs) and stochastic partial differential equations (SPDEs),
- Geometric numerical integration, algebraic and geometric structures in numerical analysis, Butcher-series, Hopf algebras, operads,
- Deterministic and stochastic numerical integrators on manifolds, projection, Lie group methods,
- Stochastic multiscale problems, asymptotic-preserving (AP) and uniformly accurate (UA) methods,
- Everything else in Mathematics!
My research focuses on stochastic geometric numerical integration and thus lies at the intersection of algebra, geometry, analysis, probability, and numerics. I use algebraic structures for the design and study of new numerical integrators that solve stochastic or deterministic evolutionary problems (ODEs, SDEs, PDEs, SPDEs), while preserving the invariants, the geometry and the multiscale features of the dynamics. The numerical applications are diverse and include in particular molecular dynamics, stochastic optimisation, quantum physics, mechanics, and machine learning. The algebraic and geometric concepts are far-reaching and are analogous to structures used in singular SPDEs, rough paths, differential geometry, homology, or operadic theory.
Feel free to contact me, whether you are looking for new numerical methods or algebraic and geometric insight.
Funding and team members:
- I am the coordinator of the ANR JCJC project MaStoC (Manifolds and Stochastic Computations) and a member of the ANR INFERNO.
- Post-doctoral researchers:
- Nassim En-Nebbazi (2026-2028)
- PhD students:
- Sarah Carrier (2026-2029, co-supervised with Karine Beauchard)
- Sébastien Macé (2025-2028, co-supervised with Nicolas Crouseilles)
- Visiting members:
- Simon Andersen (2026, SDU Odense, co-supervised with Kristian Debrabant and Anne Kværnø)
News, responsabilities, and memberships:
- Commitments:
I am the
LGBTQIA+ referee
of the Mathematics Laboratory of Rennes.
I co-organise the first French LGBTQIA+ conference "Queerly Supporting Mathematics" at CIRM in 2027.
I actively support all kinds of diversity and refuse to work with researchers who do not think everyone belongs in academia.
Useful information approved by the French ministry of Research is found here. - Commitees: I am an elected member of the CSI of INSMI and of the scientific commitee of the GDR calcul.
- Seminars: I organise with Eugenio Pozzoli the research seminar in applied mathematics at the ENS Rennes. Feel free to contact me if you would like to visit us.
- Upcoming conferences: FoCM and SciCADE, co-organisation of CANUM 2026.
- Outreach: With the Beaux Arts (EESAB) of Rennes, we use mathematical ideas in art and design projects. More to come later.
I created an escape game with the Mathscope of the University of Geneva, Christine Plaza and Léo Nicollier! You can find more information here or here. - Mathematical societies: I am a (proud) member of the Norsk Matematisk Forening and the SMAI.
Contact info:
Adrien Busnot LaurentInstitut de recherche mathématique de Rennes (IRMAR)
University of Rennes - Campus Beaulieu
France
Pronouns: Il/Lui - He/Him
Email adress: Adrien.Busnot-Laurent (aaat) inria.fr
Tel: +33 223 23 37 75
URL: adrienlaurent.net
Orcid:
https://orcid.org/0000-0002-4472-2908
Google Scholar: Link
HAL: cv.hal.science/adrien-laurent
Instagram:
adrien.ange.andre