Hi,
I have been reading posts and looking through the documentation for quite some time now and perhaps I'm at a point where I should ask a question, although much has been written on the subject. Where can I find the latest documentation on indexing in Sage? The kinds of problem I have in mind have variables indexed by t, where integer t goes from 0 to infinity. In Mathematica, it's pretty straightforward to index by t (here <http://fmwww.bc.edu/repec/bocode/s/SolvingAndSimulatingRBCModels.pdf> is one example). In Maple, expressions like "p := sum(a[i]*x^i,i=0..n);" also work well, even if n is not pre-defined. In Sage, if I understand correctly, I have to use Maxima (p = maxima('sum(a[i]*x^i,i,0,n)') <http://ask.sagemath.org/question/8181/implicitly-defining-a-sequence-of-variables/>), GiNaC expressions <http://trac.sagemath.org/ticket/11576> or functions or objects that generate a fixed set of variables (the VariableGenerator object <https://groups.google.com/forum/#!newtopic/sage-support/sage-support/GFJdjFvKCvo> is one example). Thank you for any additional reference on this. Nicholas -- 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 http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
