Hi Nils, can you open a ticket for it?
Best regards, Simon On 2021-09-08, Nils Bruin <nbr...@sfu.ca> wrote: > On Wednesday, 8 September 2021 at 09:24:15 UTC-7 max...@gmail.com wrote: > >> Hi Simon, >> >> Thank you for your insight, and let me state that I >> find InfinitePolynomialRing useful in combinatorics to deal with >> (truncated) multivariate generating functions with apriori unknown number >> of variables, and so basic operations (such as differentiation) on >> polynomials would be very welcome here. Btw, is there >> InfinitePowerSeriesRing or alike available by any chance? >> >> From what you said, I think it should be easy to fix (making it work) at >> least ISSUE#2 -- one just needs to extend the underlying finite >> PolynomialRing with the differentiating variable(s) before delegating the >> actual differentiation to it. >> > > I don't think any extending is required: if the differentiation variables > do no lie in the parent of the representing finite polynomial ring for the > actual element then the answer is 0. > > def derivative(self, *args): > R=self._p.parent() > try: > L=[R(c) for c in args] > except TypeError: #perhaps test a little more here > return > self.parent().zero() > return R(self._p.derivative(*L)) > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/shc8q8%245f3%241%40ciao.gmane.io.
