sparse matrices
- To: math group <mathgroup at yoda.physics.unc.edu>
- Subject: sparse matrices
- From: Robert Dahlgren <dahlgren at draper.com>
- Date: 6 Apr 1992 18:41:14 -0500
Subject: Time:5:27 PM OFFICE MEMO sparse matrices Date:4/6/92 I am in need of information on sparse matrix packages for mathematica or other suggestions how to handle 12x12 or even 20x20 matrices. These consist of a number of 2x2, 4x4 and 8x8 scattering matrices assembled along the diagonal of a global scattering matrix, with most of the off-diagonal coefficients zero. I need to calculate the inverse, eigenvalues & eigenvectors, and evenyually transforming to more compact global matrix. Any information on an approach before I get started would be helpful. Also, has anyone worked on mapping optical polarization states onto the Poincare sphere? Thank you. Robert Dahlgren the Charles Stark Draper Lab 555 Technology Square Cambridge, Mass. 02139 617-258-1158