Accession Number : AD0773187

Title :   Algorithms for Eigenvalue-Eigenvector Problems for Nonnormal Matrices.

Descriptive Note : Interim scientific rept.,

Corporate Author : HOUSTON UNIV TEX DEPT OF MATHEMATICS

Personal Author(s) : Morris,William L.

Report Date : 1973

Pagination or Media Count : 7

Abstract : The interim scientific report comprises a description of a number of usable computer subroutines developed under the research program. These subroutines concern themselves with manipulations with matrices. The main subroutines developed are: NEIGEN; computes all eigenvalues and eigenvectors of a complex matrix with a high degree of precision. ONEIG; computes one eigenvalue and one unit vector, namely the first column of a unitary matrix of a complex matrix. SEIGEN; computes the eigenvalues of a real symmetric matrix as well as the eigenvectors and sharp bounds for the relative errors. (Author)

Descriptors :   *Matrices(Mathematics), *Computer programming, Eigenvectors, FORTRAN, Computations

Subject Categories : Theoretical Mathematics
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE