Hi Bruce, > I would like to take a class, say for example Graph, and work with > formal R-linear combinations of Graphs. > The FormalSum only applies to numbers and the examples for > CombinatorialFreeModule only have finite sets.
This is not True: sage: CombinatorialFreeModule(QQ, NonNegativeIntegers()) Free module generated by Non negative integers over Rational Field sage: bla = CombinatorialFreeModule(QQ, NonNegativeIntegers()) sage: bla.basis()[1] B[1] sage: bla.basis()[1]+ 4*bla.basis()[123] B[1] + 4*B[123] > Can I do this? (Nicolas has said I can with CombinatorialFreeModule). Florent -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. 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-combinat-devel?hl=en.
