> I don't see the problem, because *anything* can be stored as value in > a dictionary.
Your answer with a dictionary in which are stored variables is pretty good, though there's a different with what I had in mind : You first need to define each cell of the dictionary as a variable, and you have to do it at the beginning, so that all you variable will be able to live on the same ring... I would have liked to defined a "dictionary variable" x, once and forever, such that I can afterward add and multiplicate x["d"] and x["c"].. > I think there is no easy way, simply because there is no "obvious" > ring into which both RR['y0, y1, y2'] and RR['x0, x1, x2'] coerce. What about RR['y0, y1, y2,x0, x1, x2'] ? I think it's obvious enough ( as long as both are RR-rings ) Actually, for the restricted use I will have of polynomials in Linear Programming, the first question is not so problematic if I can find a solution to the second one. But why wouldn't we automatically pick the Ring I mentionned above ? Aren't there tools in Sage to take the quotient of a ring if the user wants a smaller one ? Thank you for your answers !! :-) Nathann --~--~---------~--~----~------------~-------~--~----~ 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 For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
