We present a FORTRAN implementation of a divide-and-conquer method for computing the spectral resolution of a unitary upper Hessenberg matrix H. Any such matrix H of order n, normalized so that itsâ€¦ (More)

We present a FORTRAN implementation of a divide-and-conquer methodfor computing the spectral resolution of a unitary upper Hessenbergmatrix <?Pub Fmt italic>H<?Pub Fmt /italic>. Any such matrix<?Pubâ€¦ (More)

This issue of the Journal of Computational and Applied Mathematics is dedicated to Bill Gragg. In celebration of his seventieth birthday, researchers from the United States and several Europeanâ€¦ (More)