numerical solutions

*To*: mathgroup at christensen.cybernetics.net*Subject*: numerical solutions*From*: laska at netcom.com (Andrew Laska)*Date*: Wed, 26 Oct 1994 11:47:15 -0700 (PDT)

> > Hi, > > I am interested in Mma routines that solve complex ODE's. Is there > any at all? Another programs are welcome too. > > My interest is in the following kind of system of ODE's: > > dY/dT = p(X,Y) > dX/dT = q(X,Y) > > where X and Y are functions of T (T is COMPLEX), p and q are, say, complex > polynomials. I want to solve it NUMERICALLY. For it, is necessary to specify > a path through that the solution will be computed, since we are working in > complex plane. > I have a program, written in FORTRAN (in 1985) that works, but > I don't have access to the program sources and I wish to work with a more > sophisticated environment. I am currently working on a fourth order Runge-Kutta routine. There is one included with the standard packages but it isn't very good in my opinion. If you would like I will post it when I am finished. Please reply directly to my e-mail instaed of the list. I don;t want to flood the list with unneeded messages. I will also have to test it for complex functions. Write to me and I will get it finished up. Andrew Laska laska at netcom.com