I am a Full Professor of
Mathematics at
the University of Arizona,
where I have taught undergraduate and graduate
mathematics courses and pursued a diverse, interdisciplinary
research program.

I
developed a number of software packages that can be downloaded from
this website.

JOde

JOde, pronounced jay-oh-dee-ee, is a Java
applet and desktop application which allows one to interactively
analyze systems of differential equations. It was designed to be a
convenient aid in teaching differential equations. JOde page has been
mirrored at several Universities, including:

Harvard,
a partial mirror geared for teaching systems of 2 differential
equations.

Rutgers,
including some modifications and additional examples.

Johns
Hopkins, including some modifications and additional
examples.

LinODE

LinODE is a package for the free, open source
Computer Algebra System (CAS) called Maxima. It solves linear equations
with constant coefficients and Cauchy-Euler type equations, both homogenous
and non-homogeneous. It has a nice interface for solving boundary value
problems with these types of equations.

The package is meant primarily as a tool
for instruction. It is especially well suited for teaching engineering course
bases on the Kreyszig's book, as it has been tested on all examples in
Chapter 3 of the book.