Problem: when executing the following, the last line takes forever and had to be killed:
R = PolynomialRing(QQ, ['a','b','c','d','e'], 5) K = R.fraction_field() a,b,c,d,e = K.gens() ig = 12*a*e-3*b*d+c^2 jg = 72*a*c*e+9*b*c*d-27*a*d^2-27*e*b^2-2*c^3 hg = 8*a*c-3*b^2 deltag = 4*ig^3-jg^2 Ky.<y> = PolynomialRing(K,'y') phipoly = y^3-3*ig*y+jg What am I missing? John -- Prof. J. E. Cremona | University of Nottingham | Tel.: +44-115-9514920 School of Mathematical Sciences | Fax: +44-115-9514951 University Park | Email: [EMAIL PROTECTED] Nottingham NG7 2RD, UK | This message has been checked for viruses but the contents of an attachment may still contain software viruses, which could damage your computer system: you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation. --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-forum URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~----------~----~----~----~------~----~------~--~---
