On 04/30/2008 02:10 PM, Martin Rubey wrote:
In my case, I consider x and y in fact as formal power series in t themselves, and I think I also want that sqrt(x^2)=x.
Replace x by the formal power series in t having only the constant term -1. Ralf _______________________________________________ Axiom-developer mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/axiom-developer
