On Sat, Feb 20, 2021 at 11:10 AM Emmanuel Charpentier <emanuel.charpent...@gmail.com> wrote: > > In 9.2.beta7, (our port of) Maxima seems to have an nice bug : inability to > evaluate (some) symbolic sums. Minimal illustration : > > ``` > ;;; Loading #P"/usr/local/sage-9/local/lib/ecl/sb-bsd-sockets.fas" > ;;; Loading #P"/usr/local/sage-9/local/lib/ecl/sockets.fas" > Maxima 5.44.0 http://maxima.sourceforge.net > using Lisp ECL 20.4.24 > Distributed under the GNU Public License. See the file COPYING. > Dedicated to the memory of William Schelter. > The function bug_report() provides bug reporting information. > (%i1) display2d:false; > > (%o1) false > (%i2) sum(i, i, 1, 7); > > (%o2) 28 > > /* As expected */ > > (%i3) sum(i, i, 1, p); > > (%o3) 'sum(i,i,1,p) > > /*Huh ? */
sum() is lazy by default, you need (%i5) sum(i,i,1,p), simpsum; (%o5) (p^2+p)/2 HTH Dima > > (%i4) sum(i, i, 1, p), nouns; > > (%o4) 'sum(i,i,1,p) > > /* !!!! */ > ``` > > Curiously, `sage` seems perfectly able to use Maxima's `sum` for its own > purposes : > > ``` > sage: sum(i, i, 1, n) > 1/2*n^2 + 1/2*n > ``` > > Could you check this ? > > - On a standalone installation of Maxima > > - On previous versions of Sage ? > > > -- > 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/28fae2a2-ab48-426a-8045-a010bcd5ee83n%40googlegroups.com. -- 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/CAAWYfq3KQYx%3D%2BgJOH%2BJYcFPnkoh-7FjrZcaxNnONOftTCrOA_g%40mail.gmail.com.
