On 2014-06-23, Dima Pasechnik <dimp...@gmail.com> wrote: > On 2014-06-23, Karl Schultheisz <art.live...@gmail.com> wrote: >> Sorry, I haven't. I don't know how. > well, this is actually easy to fix, as no recompilation of Sage is > needed here: the only change is in src/sage/intefaces/maxima_lib.py > > http://git.sagemath.org/sage.git/diff/src/sage/interfaces/maxima_lib.py?id=3e25c1357e6ecc551afe3e27633fdbbd01982708 > > if you have Sage installed locally, know how to use git then > you can get this patch applied and then run `sage -b`. > > In case you do not know anything about git, you can still get a copy > of the updated file from here: > http://git.sagemath.org/sage.git/plain/src/sage/interfaces/maxima_lib.py oops, sorry, this will give you an only unpatched copy... So you really need to get the patch somehow. > > save it as SAGE_ROOT/src/sage/intefaces/maxima_lib.py > and then run `sage -b`. > > HTH, > Dmitrii >> >> On Monday, June 23, 2014 8:38:46 AM UTC-4, Dima Pasechnik wrote: >>> >>> On 2014-06-23, Karl Schultheisz <art.l...@gmail.com <javascript:>> wrote: >>> > I'm using Sage 6.2 on Arch Linux. I have posted before about sums being >>> > wrong >>> ><https://groups.google.com/d/msg/sage-support/IgC78rcdO7c/qTWzpA9f-P8J>, >>> > and I am happy to see that the community took action. Thanks! I have >>> been >>> > seeing other errors that may or may not be related to those addressed in >>> > the link above. >>> > >>> > I open a new Sage session (command line). The following code ought to >>> > return (e^x - 1)/x. >>> > >>> > sage: k = var('k') >>> > sage: sum(x^k/factorial(k+1),k,0,oo) >>> > 1/4*sqrt(pi)*sqrt(x)*e^(1/2*x) >>> > >>> > This looks similar to the sort of nonsense it was spitting out when >>> misinterpreting >>> > Bessel functions from Maxima <http://trac.sagemath.org/ticket/16224>. >>> In >>> > the same session, if I run the summation command again, the result is >>> >>> did you try applying the patch from #16224 ? >>> >>> > different. >>> > >>> > sage: sum(x^k/factorial(k+1),k,0,oo) >>> > sum(x^k/factorial(k + 1), k, 0, +Infinity) >>> > >>> > And after this it will not simplify any sums, even ones it would have >>> done >>> > correctly on the first try: >>> > >>> > sage: sum(x^k/factorial(k),k,0,oo) >>> > sum(x^k/factorial(k), k, 0, +Infinity) >>> > >>> > Even a reset doesn't help. (As a side-note, the exit command doesn't >>> > survive reset.) >>> > >>> > sage: reset() >>> > sage: k = var('k') >>> > sage: sum(x^k/factorial(k),k,0,oo) >>> > sum(x^k/factorial(k), k, 0, +Infinity) >>> > sage: exit >>> > >>> > >>> --------------------------------------------------------------------------- >>> > NameError Traceback (most recent >>> call >>> > last) >>> > /opt/sage/local/lib/python2.7/site-packages/sage/all_cmdline.py in >>> ><module>() >>> > ----> 1 exit >>> > >>> > NameError: name 'exit' is not defined >>> > >>> > Finite sums seem to be ok. >>> > >>> > sage: sum(x^k,k,0,3) >>> > x^3 + x^2 + x + 1 >>> > sage: m = var('m') >>> > sage: sum(x^k,k,0,m) >>> > (x^(m + 1) - 1)/(x - 1) >>> > >>> > Any help is greatly appreciated. >>> > >>> >>> >> >
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