On Feb 22, 2011, at 8:12 PM, Ronan Lamy wrote: > I think that a significant part of the difficulties in the discussions > about Taylor series and the like has been the lack of a common and > unambiguous vocabulary. So, I've started a wiki page defining some > concepts in order to clarify things: > https://github.com/sympy/sympy/wiki/Function-expansions > Feel free to expand or amend it, add links to and from it, etc. > NB: I had to use Markdown syntax because I couldn't figure out how to > get LaTeX to work in rST. > > Also while writing it, I've noticed 2 additional problems with > Expr.series: > * The order is off by one. > * Its name is misleading since it doesn't return a series.
I agree. 1 + x + x**2/2 + O(x**3) is not a series. A series would be something like summation(x**n/factorial(n), (n, 0, oo)). We don't have anything like that implemented (though it would be awesome if we did). On the other hand, "series" is a pretty standard name for that I think (Maple uses it for the same thing, for example). I think the answer is just to be clear in the docstring. Aaron Meurer -- You received this message because you are subscribed to the Google Groups "sympy" 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/sympy?hl=en.
