Hi, > > No, it is not written in lisp but in "spad". This is a > > small language only used by the various Axiom projects. > > And it is rather difficult to learn :-/ > > Oh I must have been thinking of Maxima.
Well, below that SPAD layer, there is Lisp. > > There are some holes in the algebraic branch there too. > > But never the less its probably the most complete code > > available. > > Oh sure, no one has a full implementation. But these corner cases are > less likely to actually be used by someone. I don't understand why nobody considers filling these holes. AFAIK the math is completely developed although very complicated. > The real problem is that the algorithms needed here are not really > implemented in the polys module. And "copy and paste" from Axiom to > the polys module would presumably be much harder than copy and paste > to the risch module. Right. The category & domain approach taken there is very interesting both not easily portable to other systems I think. > > This is not true, in Fricas there are very interesting things > > going on. In particular some new Risch extensions are implemented. > > Search the mailing list for details. > > OK so Fricas is the better one then. Well, depends on the meaning of "better". I compile and use all three systems more or less regularly, but I spent most time in Fricas. -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. For more options, visit https://groups.google.com/groups/opt_out.
