Second cohomology for finite groups of Lie type

Brian D. Boe, Brian Bonsignore, Theresa Brons +13

Let $G$ be a simple, simply-connected algebraic group defined over ${\mathbb{F}}_p$. Given a power $q=p^r$ of $p$, let $G({\mathbb{F}}_q)\subset G$ be the subgroup of ${\mathbb{F}}_q$…