You can use dictionaries, like this: sage: R.<x,y> = PolynomialRing(GF(2),2,'xy') sage: coeffs = {(1, 0): 1, (1, 1): 1} sage: R(coeffs) x*y + x
On Thu, Feb 5, 2009 at 12:31 PM, Christophe Oosterlynck <tif...@gmail.com> wrote: > > Hi, > > is there a way to construct a polynomial using a coefficient vector? > If I construct a polynomial ring ( R = BooleanPolynomialRing(5,'x') ), > I want to be able to construct, for example, a polynomial "x0 +x0*x1" > by using the coefficients vector [0,1,0,0,0,0,1,0,0,0,0 ... ] > > thanks > > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---