Re: [sage-devel] What should be the present working directory for sage -notebook=ipython ?

2014-10-15 Thread Nicolas M. Thiery
On Mon, Oct 13, 2014 at 06:25:01AM -0700, Sébastien Labbé wrote: Time to vote. What do you prefer as default directory for the ipython notebook? - pwd - DOT_SAGE/notebooks_ipython/ pwd without hesitation! That's one of my main gripe about the sage notebook. And I had trouble

Re: [sage-devel] Re: (fwd from sage-support) A mathematical mistake in root_lattice_realizations.py

2014-10-15 Thread Nicolas M. Thiery
Hi Dinakar, On Mon, Oct 13, 2014 at 11:57:25PM -0700, Travis Scrimshaw wrote: I wrote that part of the code and was assuming the user would be checking if a root is real or imaginary. However I'm definitely for adding this feature and having a method `is_root`. We can check

[sage-devel] 2-year project with full-time software developer for improving coding theory in Sage

2014-10-15 Thread Johan S. R. Nielsen
Hi sage-devel This is to announce and get some feedback on the start of a Sage software-development project. This spring, Daniel Augot, Clément Pernet and I got funding from INRIA for hiring a full-time software developer for two years to work on extending the coding theory functionality in

[sage-devel] Re: KASH and polynomials of degree 22 and 23

2014-10-15 Thread Bill Hart
KASH/KANT hasn't been maintained since about 2008 or something like that. I think you are pretty unlikely to get a response from their email address. However, I think I hear the voice of one of the former maintainers going into his office just down the hall from me. I'll ask him. If he says

[sage-devel] Re: 2-year project with full-time software developer for improving coding theory in Sage

2014-10-15 Thread mmarco
That is great news AFAIK, there is still some code from last year's GSoC which is not merged, so maybe it is a good oportunity to retake that (ticket #14973) El miércoles, 15 de octubre de 2014 17:22:40 UTC+2, Johan S. R. Nielsen escribió: Hi sage-devel This is to announce and get

[sage-devel] Code fails on SECOND attempt only... please help!

2014-10-15 Thread Joao Alberto de Faria
In the midst reviewing ticket 16986, my reviewer came up with the following example that fails: R.z=PolynomialRing(QQ) K.w=NumberField(z^3+2) R.t=PolynomialRing(K) L.v=K.extension(t^2+t+1) P.x,y=ProjectiveSpace(L,1) H=End(P) f=H([x^3-2*y^3,v*y^3]) f.rational_preimages(P([0,1])) However, when I

[sage-devel] Re: Code fails on SECOND attempt only... please help!

2014-10-15 Thread Volker Braun
I guess caching is causing that. Creating ProjectiveSpace twice with the same input creates two projective spaces that are equal (P==Q) but not identical (P is not Q). Caching will look at == so if you compute something on the second projective space then you might get back something from the

Re: [sage-devel] Re: 2-year project with full-time software developer for improving coding theory in Sage

2014-10-15 Thread David Joyner
On Wed, Oct 15, 2014 at 12:47 PM, mmarco mma...@unizar.es wrote: That is great news Agreed. great news! AFAIK, there is still some code from last year's GSoC which is not merged, so maybe it is a good oportunity to retake that (ticket #14973) El miércoles, 15 de octubre de 2014

Re: [sage-coding-theory] Re: [sage-devel] Re: 2-year project with full-time software developer for improving coding theory in Sage

2014-10-15 Thread Nathann Cohen
Hello ! Agreed. great news! Indeed. I do not know if what you have in mind about coding theory somehow overlaps with combinatorial designs (in particular orthogonal arrays/BIBD :-P) but it would be nice to shake those areas of Sage anyway. Of course, all code will go through the Trac and thus

Re: [sage-coding-theory] Re: [sage-devel] Re: 2-year project with full-time software developer for improving coding theory in Sage

2014-10-15 Thread Nathann Cohen
About dependencies (again): Working with Vincent on Combinatorial Designs (many tickets between beta releases) taught us that it is better to 'artificially' order all tickets linearly. Each ticket should have a successor and a predecessor, and they should all be linearly ordered. It is tempting

Re: [sage-coding-theory] Re: [sage-devel] Re: 2-year project with full-time software developer for improving coding theory in Sage

2014-10-15 Thread Nicolas M. Thiery
On Wed, Oct 15, 2014 at 07:58:53PM +0200, Nathann Cohen wrote: About dependencies (again): Working with Vincent on Combinatorial Designs (many tickets between beta releases) taught us that it is better to 'artificially' order all tickets linearly. Each ticket should have a

[sage-devel] Re: 2-year project with full-time software developer for improving coding theory in Sage

2014-10-15 Thread Anne Schilling
This is great news! Is there any plan to implement semaphore codes in the near future (see the book by Jean Berstel http://www.goodreads.com/author/show/399140.Jean_Berstel, Dominique Perrin http://www.goodreads.com/author/show/926712.Dominique_Perrin, Christophe Reutenauer