2 problems

Let $n\geq 3$, let $\Gamma<\operatorname{SL}(n,{\bf R})$ be a lattice, and let $M$ be a compact manifold of dimension $n$. A volume-preserving blow-up or two-sided blow-up is one i…

Let $n$ be a positive integer. Consider volume-preserving actions of $\operatorname{SL}(n,\mathbb{Q})$ on compact manifolds. Dimension bound conjecture. The group…