Except for the Programa Traçador de Diagramas de Fase
below (now obsolete), all the software below is actually not intended
for an end user. It was designed to test algorithms and mathematical
ideas. Most of the projects were discontinued, and there is no
support available. On the other hand, sources are free and distributed
under GPL.

Software

Polynomial System Solver,
version 3.0.5 (2003)
This is an old working version of my software for solving sparse
polynomial systems. It is qualitatively much better than pss 2.0.
However, many important features are missing. It may have serious bugs.

The algorithm is based on polyhedral homotopy and homotopy on
toric varieties. Results are certified with alpha-theory. The
procedure for computing mixed subdivisions was based on a certain
conjecture, to which I found a counterexample in 2014.
So the program could return wrong values for
the mixed volume.

This software was tested under Linux on a pc. It is distributed
under GNU Public License Agreement version 2.

This is a Beta version of our new algorithm for solving
univariate polynomials. It is based on the Renormalized
Graeffe Iteration (See my paper On The Geometry of
Graeffe Iteration, together with Jorge P. Zubelli,
in the papers section).

This software was tested under Linux on a pc. It is distributed
under GNU Public License Agreement version 2.

Old software

You may also download old
df 2.5, to draw phase portraits of systems of ODE's in
the plane. This software was written in 1987 (modified 1989)
and received the Premio Nacional de Software Educacional
Brasileiro, MEC, 1987.

It used to run on a PC, under EGA or VGA.

Miscellaneous

The software of our paper on a fast and stable algorithm for
splitting polynomials can be downloaded
here . This is an alpha version ! It is intended only for testing
the algorithm and to obtain the table of results in the end of the
paper. Runs under AIX.
Gregorio Malajovich