Es sei Γ = ⟨ u , v ⟩ ⊆ C {\displaystyle {}\Gamma =\langle u,v\rangle \subseteq {\mathbb {C} }} ein Gitter in C {\displaystyle {}{\mathbb {C} }} und sei ( a b c d ) ∈ GL 2 ( Z ) {\displaystyle {}{\begin{pmatrix}a&b\\c&d\end{pmatrix}}\in \operatorname {GL} _{2}\!{\left(\mathbb {Z} \right)}} . Es sei s > 2 {\displaystyle {}s>2} . Zeige