THE EIGENVALUES OF THE SPHEROIDAL WAVE EQUATION AND THEIR BRANCH POINTS

A comprehensive account is given of the behavior of the eigenvalues of the spheroidal wave equation as functions of the complex variable c('2). The convergence of their small-c('2) expansions is limited by an infinite sequence of rings of branch points of square root type at which adjacent...

Full description

Bibliographic Details
Other Authors: GUERRIERI, BRUNO.
Format: Others
Subjects:
Online Access: http://purl.flvc.org/fsu/lib/digcoll/etd/3085212
Description
Summary:A comprehensive account is given of the behavior of the eigenvalues of the spheroidal wave equation as functions of the complex variable c('2). The convergence of their small-c('2) expansions is limited by an infinite sequence of rings of branch points of square root type at which adjacent eigenvalues of the same type become equal. Known asymptotic formulas are shown to account for how and where the eigenvalues become equal. These asymptotic series for the eigenvalues apply beyond the rings of branch points; we show how they can now be identified with specific eigenvalues. === Source: Dissertation Abstracts International, Volume: 42-11, Section: B, page: 4449. === Thesis (Ph.D.)--The Florida State University, 1982.