file lyapack.tar.gz for the solution of certain large scall problems in control theory, , which are closely related to Lyapunov equations. LYAPACK uses , iterative algorithms and is intended for large, sparse problems. by Thilo Penzl lang Matlab file README for short introduction to LYAPACK file guide.ps for user's guide for LYAPACK in PostScript format file guide.pdf for user's guide for LYAPACK in PDF format