[sage-support] Integration bug?

2018-10-01 Thread Simon King
Hi! I get the following with sage-8.4.beta5: sage: f(x) = cos(pi*x) sage: (f(x)*exp(-I*pi*x)).integral(x)(x=1/2) - (f(x)*exp(-I*pi*x)).integral(x)(x=-1/2) 1/2 sage: (f(x)*exp(-I*pi*x)).integral(x,-1/2,1/2) 1 The previous two expressions are not equal, but I think they should be equal.

Re: [sage-support] Problem installing on Ubuntu 18.04

2018-10-01 Thread Andy Howell
I  do the following: - cd ~/bin - untar the Ubuntu 16.04 version - rename the ~/bin/SageMath to ~/bin/SageMath-8.3 so that I can have multiple versions if needed. - ln -s ~/bin/SageMath-8.3/sage sage-8.3 - ln -s ~/bin/SageMath-8.3/sage sage # My default version ~/bin is in my path, so I can

[sage-support] Re: Problem installing on Ubuntu 18.04

2018-10-01 Thread Augustin Lefevre
So it seems that when I make a symbolic link to /usr/share, running sage crashes But when I run it directly from the install directory using : ./sage, everything runs fine, patches are compiled, and I get through to running a notebook. -- You received this message because you are subscribed

[sage-support] Problem installing on Ubuntu 18.04

2018-10-01 Thread Augustin Lefevre
Hi, I went through other posts with the same title, and tried several different ways to install sage, all without success : 1) with apt : apt-get install sage-jupyter 2) downloading the latest Ubuntu 16 binary : since there are no Ubuntu 18 binary I chose the most recent one, then ran sage.

[sage-support] simplification of results from Sage Cell Server

2018-10-01 Thread Troels Ring
Dear friends - I have a quotient which I need to differentiate and show the differential is always positive for unknown H>0. We have 7 unknown constants all known to be positive and less than 1 except for A which may be any positive value. In Sage Cell Server I did this

Re: [sage-support] Re: Accessing group generators in libgap

2018-10-01 Thread Dima Pasechnik
On Mon, Oct 1, 2018 at 8:58 AM Simon King wrote: > > Hi Dima, > > On 2018-09-30, Dima Pasechnik wrote: > > it was written before optional parameters era in GAP, as far as I know. > > Anyhow, you can use GAP's PushOptions() and PopOptions() to achieve more or > > less > > the same effect, with a

[sage-support] Re: Accessing group generators in libgap

2018-10-01 Thread Simon King
Hi Dima, On 2018-09-30, Dima Pasechnik wrote: > it was written before optional parameters era in GAP, as far as I know. > Anyhow, you can use GAP's PushOptions() and PopOptions() to achieve more or > less > the same effect, with a big uglier syntax. "Uglier" only internally. I think it