UR Home

# Spectral estimates and non-selfadjoint perturbations of spheroidal wave operators

URN to cite this document:
urn:nbn:de:bvb:355-epub-109908
DOI to cite this document:
10.5283/epub.10990
Finster, Felix ; Schmid, Harald
 Preview
PDF
(787kB)
Date of publication of this fulltext: 27 Nov 2009 07:03

## Abstract

The spheroidal wave operator $\cal A$ is a linear elliptic operator of second order with smooth coefficients on the unit sphere $S^2$. Using angular variables $\vartheta \in (0,\pi)$ and $\phi\in [0,2\pi)$ this operator may be written in the form ${\cal A}=-{d\over{d \cos \vartheta}}\sin^2\vartheta {d\over{d \cos \vartheta}} + {1\over {\sin^2 \vartheta}}\left(\Omega\sin^2\vartheta+k\right)^2.$ ...

Owner only: item control page

## University Library

Publication Server

Contact:

Publishing: oa@ur.de
0941 943 4239

Dissertations: dissertationen@ur.de
0941 943 3904

Research data: daten@ur.de
0941 943 4239