ACCURATE BOUNDS FOR THE EIGENVALUES OF THE LAPLACIAN AND APPLICATIONS TO RHOMBICAL DOMAINS.

Abstract

The report concerns the eigenvalues and eigenfunctions of Laplace's differential operator on a bounded two-dimensional domain G with zero values on the boundary. The paper describes a new technique for determining the coefficients in the expansion of an eigenfunction in terms of particular eigenfunctions of the differential operator. The coefficients are chosen to make the sum of the expansion come close to satisfying the boundary conditions. As an example, the eigenvalues and eigenfunctions are determined for a rhombical membrane. (Author)

Document Details

Document Type
Technical Report
Publication Date
Feb 19, 1969
Accession Number
AD0682978

Entities

People

  • Cleve B. Moler

Organizations

  • Stanford University

Tags

DTIC Thesaurus Topics

  • Algebra
  • Boundaries
  • Coefficients
  • Cooperation
  • Eigenvalues
  • Eigenvectors
  • Geometry
  • Mathematics
  • Membranes
  • Michigan
  • Two Dimensional

Fields of Study

  • Mathematics

Readers

  • Calculus or Mathematical Analysis
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)