grandes-ecoles 2022 Q6.3

grandes-ecoles · France · x-ens-maths-d__mp Proof Bounding or Estimation Proof
Show that there exists a constant $C>0$ such that for all $v\in\mathcal{H}$, $$|\{g\in\Gamma \text{ such that } gv\in T\}| \leq C.$$
Show that there exists a constant $C>0$ such that for all $v\in\mathcal{H}$,
$$|\{g\in\Gamma \text{ such that } gv\in T\}| \leq C.$$