Here's what it says at http://ftp.gnu.org/gnu/gnans.README
A program and language for the numerical study of deterministic and stochastic dynamical systems, which may evolve in continuous or discrete time. It loads the definition of a dynamical system in an equation oriented language, translates this into C++, compiles and links this, and solves the equations numerically with the speed of a compiled (rather than interpreted) program. It has a GUI that allows the program to be controlled and the parameters changed easily. Available at ftp.uu.net/pub/math/gnans/. As of 2002-04-25, binaries for Irix, Solaris, and GNU/Linux were available at that location.ftp.mathematik.uni-bremen.de, supposedly the source of this mirror, doesn't seem to exist and ftp.math.uni-bremen.de doesn't have it. - FSF Staff It is not at those addresses. But have no fear, I have tracked it down: http://www.bengt-martensson.de/software/gnans/gnans-1.6.2.tar.gz This is the site of the original author. So somehow it should be pushed (or pulled) into ftp.gnu.org , someone should contact Bengt Martensson and figure out how to proceed. I doesn't build cleanly but the bugs are minor, I almost have them fixed, might take a few hours, but I didn't want to delay this announcement, for those have been waiting since 2002 to get this.
