On Friday, April 7, 2017 at 5:18:34 PM UTC+1, Chris Seberino wrote: > > I have no doubt you know about group theory and math in general more than > me. I have no doubt > your answer is defensible and accurate. > > What I'm concerned about is the young students and what they expect to see > when > they type factor( ... ). >
They have to get used to the fact that the answer depends upon the domain the object they factor comes from. Think e.g. about x^2-2 factored as (x-sqrt(2))*(x+sqrt(2)) --- or not, if we only allow rational coefficients in our polynomials. Or x^2+1 being factored as (x-i)*(x+i) --- or not, if we only allow real coefficients... > cs > > On Friday, April 7, 2017 at 9:56:31 AM UTC-5, projetmbc wrote: >> >> Just try : >> >> --------------------------------- >> Z_T, t = ZZ['x'].objgen() >> >> print factor(6*t+3) >> print factor(6*x+3) >> --------------------------------- >> >> You will se that you need to use the right ring of polynomials. >> >> C. >> > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
