The integral is well definded, since the function | f ( z ) | 2 {\displaystyle |f(z)|^{2}} is Γ {\displaystyle \Gamma } - invariant.
Das Integral ist wohldefiniert, da die Funktion | f ( z ) | 2 {\displaystyle |f(z)|^{2}} Γ {\displaystyle \Gamma } -invariant ist.