The Refined Toledo Invariant of a Non-Archimedean Surface Group Representation

Quand : 8 juin 2026 à 14:00

Où : IHES

Organisé par : Institut Henri Poincaré

Let S be a compact oriented surface with boundary, Γ its fundamental group, and G a simple algebraic group defined over Q such that the symmetric space associated to G ( R ) is Hermitian of tube type. Given a real closed field F and a canonical presentation of Γ , we define for a representation of Γ in G ( F ) an invariant taking values in an ordered abelian group A ( F ), called the refined Toled