Thank you. It is obviously time that I learn to use git. On Monday, June 23, 2014 9:10:09 AM UTC-4, Dima Pasechnik wrote: > > On 2014-06-23, Dima Pasechnik <dim...@gmail.com <javascript:>> wrote: > > On 2014-06-23, Karl Schultheisz <art.l...@gmail.com <javascript:>> > 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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