# Hebrew University topology and geometry seminar

December 9, 2015

1100-1235

Ross building, Seminar Room 70A

## Julien Duval

*Université Paris Sud
*

##
Ahlfors inequality for surfaces

**Abstract:**
This Riemann-Hurwitz type inequality for non proper
holomorphic maps between Riemann surfaces gives a
geometric version of value distribution theory. I'll
explain a proof of it.