As Vincent and Niles have brought up, there might be advantages to it being a symbolic function. How does one actually go about making that happen? Is this an intrusive change, or an easy one? I really have no idea... ---Greg
On Sun, Jun 22, 2014 at 5:00 PM, Vincent Delecroix <20100.delecr...@gmail.com> wrote: > As Niles already said it would be better to have it as a symbolic function > > sage: f(x) = real_nth_root(x, 5) > sage: f > x |--> real_nth_root(x,5) > > 2014-06-22 22:36 UTC+02:00, Gregory Bard <gregory.bard1...@gmail.com>: >> Yes, that is reasonable. Let us call it "real_nth_root" instead, as >> suggested by Nicolas Thiery. Any other requests/comments? >> >> It would be superb if this could be resolved by June 30th, when my >> book goes to the American Mathematical Society for publication... >> ---Greg >> >> On Sun, Jun 22, 2014 at 9:02 AM, William Stein <wst...@gmail.com> wrote: >>> On Sun, Jun 22, 2014 at 8:27 AM, Nicolas M. Thiery >>> <nicolas.thi...@u-psud.fr> wrote: >>>> On Fri, Jun 20, 2014 at 06:33:52PM -0700, Gregory Bard wrote: >>>>> It seems that the consensus on both Sage-devel and Sage-edu is to go >>>>> with some sort of nth_real_root function. I propose the following, >>>>> which I have tested for evaluation, plotting, differentiation, and >>>>> integration. Sadly, the derivative has a Dirac delta in it, which is >>>>> ... perhaps unavoidable because of the vertical tangency of the >>>>> cuberoot function at x=0. (Naturally, we can remove the asserts once >>>>> testing is completed. >>>>> ---Greg >>>>> >>>>> def nth_real_root( x, n ): >>>> >>>> Just 2 cents of outsider feedback since I have not followed the >>>> discussion, and am not knowledgeable on the topic. This names suggests >>>> to me that we look at all the real roots of n (for whatever this >>>> means), and then take the n-th one. So maybe real_nth_root instead? >>> >>> +1 >>> >>>> >>>> Cheers, >>>> Nicolas >>>> -- >>>> Nicolas M. Thiéry "Isil" <nthi...@users.sf.net> >>>> http://Nicolas.Thiery.name/ >>>> >>>> -- >>>> You received this message because you are subscribed to the Google Groups >>>> "sage-devel" group. >>>> To unsubscribe from this group and stop receiving emails from it, send an >>>> email to sage-devel+unsubscr...@googlegroups.com. >>>> To post to this group, send email to sage-devel@googlegroups.com. >>>> Visit this group at http://groups.google.com/group/sage-devel. >>>> For more options, visit https://groups.google.com/d/optout. >>> >>> >>> >>> -- >>> William Stein >>> Professor of Mathematics >>> University of Washington >>> http://wstein.org >>> >>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "sage-devel" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/sage-devel/Q8VLKBypcJk/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> sage-devel+unsubscr...@googlegroups.com. >>> To post to this group, send email to sage-devel@googlegroups.com. >>> Visit this group at http://groups.google.com/group/sage-devel. >>> For more options, visit https://groups.google.com/d/optout. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sage-devel" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to sage-devel+unsubscr...@googlegroups.com. >> To post to this group, send email to sage-devel@googlegroups.com. >> Visit this group at http://groups.google.com/group/sage-devel. >> For more options, visit https://groups.google.com/d/optout. >> > > -- > You received this message because you are subscribed to a topic in the Google > Groups "sage-devel" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/sage-devel/Q8VLKBypcJk/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > sage-devel+unsubscr...@googlegroups.com. > To post to this group, send email to sage-devel@googlegroups.com. > Visit this group at http://groups.google.com/group/sage-devel. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
