2 problems

Let $\mathbf{G}$ and $\mathbf{G}'$ be algebraic groups defined over infinite fields $k$ and $k'$, respectively. Let $\mathbf{G}^+$ denote the subgroup of $\mathbf{G}(k)$ generated…

Let $G$ be an absolutely almost simple simply connected algebraic group over a finitely generated field $K$ of characteristic zero, or over a field of good characteristic relative…