Geneva University seminars

The number of images in lensing

Name: The number of images in lensing
Start: 2008-10-31T11:30:00+01:00
End: 2008-10-31T12:30:00+01:00
Location: No location set

by Jean-Pierre Eckmann (University of Geneva)

Friday 31 Oct 2008, 11:30 → 12:30 Europe/Zurich

Universite de Geneve, Auditoire 234

Description

This talk follows a review paper by Khavinson and Neumann (Notices AMS, 55, 666-675, 2008). The authors explain how one can get an upper (and lower) bound on the number of images of a source by n masses. (If n>1, the number is 5(n-1)). I liked this paper because it is a nice application of complex analysis, and to some extent, dynamical systems.

Organised by

University of Geneva