On Thursday, September 20, 2012 1:05:56 PM UTC+2, Georgi Guninski wrote: > > pari disagrees with sage and maxima agrees with it. > > which way is it? > > maxima session: > (%i12) p1:(x2)*(x3-x4);p2:x2*(x3-2*x4); > (%i14) resultant(p1,p2,x1); > (%o14) 1 >
In this case, there is no evaluation of x1 in the algbebraic closure of QQ(x2,x3,x4) that makes both polynomials zero. > (%i15) resultant(p1,p2,x2); > (%o15) 0 > In this case, there is a common root in the algebraic closure of QQ(x1,x3,x4), namely x2=0 -- You received this message because you are subscribed to the Google Groups "sage-support" group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
