Nevanlinna ramification index (source code)

= Nevanlinna ramification index
{c}
{title2=$\theta_f(a)=\liminf[N(r;a)-\overline N(r;a)]/T_f(r)$}

The <Nevanlinna ramification index> is the normalized lower limiting integrated excess <multiplicity> over a target value, with <pole> orders used for infinity. It is an asymptotic value-distribution quantity, distinct from the integer <ramification index of a holomorphic map> at one source point. It can be positive even when the target has positive <Nevanlinna deficiency>.