[sage-devel] Re: Matrix groups are not uniquely represented, why?

2018-05-28 Thread Nils Bruin
On Monday, May 28, 2018 at 7:24:31 AM UTC-7, Simon King wrote: > > However, I find your notion of immutability ("do not allow assigning > attributes and make all existing attributes immutable") far too narrow. > IIRC, immutable means that once the object is created, its equivalence > class with

[sage-devel] IPython transformations rework

2018-05-28 Thread Jason Grout
Thomas Kluyver is reworking the input transformation framework for IPython for IPython 7, and is requesting input from whoever is doing transformations. Whoever is working on the input transformations for Sage these days might want to chime in: https://mail.python.org/pipermail/ipython-dev/2018-Ma

[sage-devel] Re: Matrix groups are not uniquely represented, why?

2018-05-28 Thread Simon King
Hi Erik On 2018-05-28, Erik Bray wrote: > I think Sage could use a better way to keep > track of and/or enforce immutability of classes (that is, instances of > classes). For example, have some base class which can be used as a > mix-in (or an ABC) that designates something as immutable, and > d

Re: [sage-devel] Re: Matrix groups are not uniquely represented, why?

2018-05-28 Thread Erik Bray
On Sat, May 26, 2018 at 6:24 AM, Travis Scrimshaw wrote: > MatrixGroups are immutable and their comparison is by checking the > generators (and not isomorphism), which are essentially the construction > parameters (in reality, they are the corresponding GAP group). For > permutation groups, the eq

Re: [sage-devel] Unpacking sage i could not manage to. Would anybody give me a hint please i am a newby! Thanks

2018-05-28 Thread Erik Bray
Hi, I'm assuming you're running Sage from the Debian package. Is that correct? It's possible that something about your Debian installation is broken somehow.We'd need more information such as how you installed Sage, what you ran,if you have any strange environment variables set (try running

[sage-devel] Unpacking sage i could not manage to. Would anybody give me a hint please i am a newby! Thanks

2018-05-28 Thread Elaettin Yesilcimen
┐ │ SageMath version 8.1, Release Date: 2017-12-07 │ │ Type "notebook()" for the browser-based notebook interface.│ │ Type "help()" for help.│ └───