3 papers
math.CV1998
A new variant of the Schwarz-Pick-Ahlfors lemma
Robert Osserman
We prove a ``general shrinking lemma'' that resembles the Schwarz--Pick--Ahlfors Lemma and its many generalizations, but differs in applying to maps of a finite disk into a disk, r…
math.CV1997
A sharp Schwarz inequality on the boundary
Robert Osserman
A number of classical results reflect the fact that if a holomorphic function maps the unit disk into itself taking the origin into the origin, and if some boundary point maps…
math.DG1996
An estimate for the Gauss curvature of minimal surfaces in whose Gauss map omits a set of hyperplanes
Robert Osserman, Min Ru
We give an estimate of the Gauss curvature for minimal surfaces in whose Gauss map omits more than hyperplanes in .