LULU is syntomic

Paulo Lima-Filho, E. Javier Elizondo

Let $G$ be a Chevalley group over a field $\mathbb{k}$. Fix a maximal torus $\mathbb{T}$ in $G$, along with opposite Borel subgroups $B$ and $B^{-}$ satisfying $ \mathbb{T} = B \cap…