On Friday, August 17, 2018 at 1:48:30 AM UTC+3, Laurent Bakri wrote:
>
> Hi all,
> as indicated in the crash message, I email you the crash report.
>
we need to know how you installed Sage, and something about your OS (what
Linux distribution and what
version it is).
>
> Cheers,
> *
PS: Found using the following trac query:
https://trac.sagemath.org/query?order=id&desc=1&summary=~abs(sin
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Sun 2018-02-11 21:55:14 UTC, Andrey Novoseltsev:
>
> I got this bug report and it seems that I have seen something similar
> in the past but can't find it. Is it already known/tracked?
>
> show(integral(abs(sin(pi*x)), x, 0, 1))
> plot(abs(sin(pi*x)), 0, 1)
>
> The value of the integral is incorrec
It's the pattern sqrt(f(x)) with f containing trigonometric functions. Use
giac for such integrals.
sage: integral(abs(sin(pi*x)), x, 0, 1, algorithm='giac')
2/pi
There is no meta ticket for this, you can find integration tickets
at https://trac.sagemath.org/wiki/symbolics#Integrationtickets
I
I will close this "error report thread" here, since I got a perfect answer
at
https://ask.sagemath.org/question/40935/bug-report-kernel-dies-after-1-hour-while-dividing-polynomials/
The workaround is not to create the quotient ring.
It is better to work in polynomial rings and to use the "lift"
Nils, thank you very much for your answer.
(1)
You are right when you say that the division of polynomials can't always be
done in ideals. In my special case I deal with meromorphic functions on
the general elliptic curve with 17-torsion point P=(0,0) and basepoint O
and know the divisors of all
On Monday, February 5, 2018 at 9:11:44 AM UTC, Patrick Reichert wrote:
>
> I want to submit an *error report* for SAGE 7.0 and 8.0:
>
> The division of two polynomials in an ideal causes an *kernel death*
> after one hour of computation.
> Singular performs the calculation in about *one second*.
>
The relevant line is
ImportError: libgfortran.so.3: cannot open shared object file: No such
file or directory
You need to install libgfortran. For this, run this command in a terminal:
sudo apt-get install libgfortran
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On Monday, May 23, 2016 at 9:22:35 AM UTC-7, Guillaume Holler wrote:
>
> I don't know if this is the right place to submit bugs.
>
It's a reasonable place to start.
> I have consistently reproduced the following bug:
>
I have tried and was unable to reproduce your results on 7.2. Can you give
I have just realized that CubeGroup().faces("U") also goes counterclockwise
! what a mess !
On Thursday, March 19, 2015 at 1:07:12 PM UTC+1, Pierre wrote:
>
> Hi,
>
> I have just realized this, and thought it would be helpful to know for
> anyone playing with Sage's Rubik's cube abilitites. H
On Feb 21, 2015 1:48 PM, "kcrisman" wrote:
>>
>>
>> I'm constantly getting basic calculus bug reports because of
>> SageMathCloud.We don't have a "sage-bugs" list, and even I'm not
>> sure where to send these bug reports...
>>
>
> Sage-support seems reasonable to me. Unless we have a way to m
>
>
> I'm constantly getting basic calculus bug reports because of
> SageMathCloud.We don't have a "sage-bugs" list, and even I'm not
> sure where to send these bug reports...
>
>
Sage-support seems reasonable to me. Unless we have a way to make it
easier to use Trac (no reg process), but
On Sat, Feb 21, 2015 at 11:42 AM, William Stein wrote:
> From a user:
>
> I verified that Sage does what he claims [1]. I guess this is a bug
> in Maxima really.
Follow-up: One can also get a different incorrect answer using
algorithm='sympy'
sage: limit(csc(x),x=0, algorithm='sympy')
+Infi
On Friday, June 27, 2014 5:26:36 PM UTC-4, Christoph Jentzsch wrote:
>
> Hi there,
>
> solve([sin(cos(x))/cos(x)==0],x) gives:
>
> [x == 1/2*pi]
> which is wrong. There is no solution.
>
>
Thanks for reporting this.
>
> See plot(sin(cos(x))/cos(x),(-pi,pi))
>
>
>
Well, in any case solve is
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