Biography

Florian Viguier

Doctor in mathematics
University of Strasbourg

Current situation

I am currently an ATER (temporary teaching and research associate) in the arithmetic and algebraic research team of the IRMA of Strasbourg.

I conducted my PhD thesis under the supervision of Christine Huyghe on the subject of Fourier-Mukai transforms for algebraic differential operators over a formal abelian variety. I defended it on December 16, 2021 at the IRMA of Strasbourg.

Research topic

Key words: Abelian varieties, arithmetic D-modules, cristalline D-modules, Fourier-Mukai transform, rigid analytic varieties.

In 1981, Shigeru Mukaï defined the now called Fourier-Mukaï transform for abelian varieties over algebraically closed fields, which gives an equivalence of categories between quasi-coherent sheaves over an abelian variety and quasi-coherent sheaves over its dual. It has some important applications in other domains such as mirror symmetry and string theory.

Thanks to the independent work of Laumon and Rothstein, the construction of the Fourier-Mukaï transform have been extended to sheaves of differential operators on a locally noetherian base of characteristic zero, using the universal vectorial extension of the dual of an abelian variety.

The goal of my research is to define similar transforms in the arithmetic case, using the arithmetic sheaves of differential operators introduced by Berthelot. This induces, among others, a deep comprehension of the Poincaré sheaf and the construction of an arithmetic group scheme analogous to the universal vectorial extension of the dual abelian variety.

Scientific mediation

In parallel of my research and teaching, I also dedicate myself to the scientific mediation via various events. Here are a few that I'm taking at heart: