Stability for linear systems

This is a note which corrects an error in Perko's book (Lawrence Perko, Differential equations and dynamical systems, Theorems 2 and 3 in Section 1.9).

Available as a DVI file (3 A5 pages) or as a Postscript file (2 A4 pages).

The PostScript file is in landscape format, containing two A5 pages per A4 page. Before sending it off to a printer capable of printing two-sided output, you may wish to prepend the following lines to it, to make the top of the text face the same way on both sides of the paper:

%!
%%Note: Causes an error if the printer does not know these modes.
statusdict begin true setduplexmode true settumble end

1998-02-24 11:09:51 UTC