[sage-devel] Re: Automatic Differentiation - Taylor Arithmetics

Hi all, Yet another open source alternative: Taylor models are implemented in Julia (see TaylorModels.jl ), and this library offers validated integration of ODEs (disclaimer: i also contribute to this and related projects that use other

Re: [sage-devel] Re: How much do we support the casual user

One question: if 3/1 is not prime but ZZ(3/1) is, shouldn't 3/1 == ZZ(3/1) return False? (I don't know how does sage evaluate == , is it documented? I searched for "==" in the docs and got nothing, and "equivalence" gives a super long list.) El miércoles, 28 de marzo de 2018, 9:02:41 (UTC-3),

[sage-devel] Re: 6 hours left to prepare GSoC application for this year!

Dear Dima, To let you know that I'm up to help / co-mentor in "Polynomial optimisation and sums of squares (multiple projects)" All the best, Marcelo El martes, 23 de enero de 2018, 10:18:34 (UTC-3), Travis Scrimshaw escribió: > > I just posted 4 projects (my 3 from last year with some

Re: [sage-devel] Help with Expect interface UnicodeEncodeError for Julia interface

23, 2017 at 6:33 PM, mforets <mfo...@gmail.com > > wrote: > > Hello, > > I'm writing an "expect" interface to use Julia from Sage, copy pasted > from > > the Matlab `interfaces/matlab.py`. > > > > For the moment, the code is here:

Re: [sage-devel] Zulip

added zulip.sagemath.org link to https://wiki.sagemath.org ... it may be good to put it somewhere in https://trac.sagemath.org/ i think that this tool can be especially useful for new developers, and to start new collaborations. El miércoles, 9 de agosto de 2017, 9:58:58 (UTC+2), John Cremona

Re: [sage-devel] Re: error accessing np.random?

: np.random.random? >> > Docstring: >> > ... >> > >> > >> > So this looks like some ipython/Sage-related thing... >> > >> > On Thursday, August 3, 2017 at 1:33:27 PM UTC+1, Eric Gourgoulhon >> wrote: >> >> >

[sage-devel] error accessing np.random?

in Sage v.8.0, sage: import numpy as np sage: np.random? Traceback (most recent call last) ... NotImplementedError: Column or row spanning cells are not implemented. could someone confirm the error? is it an error on NumPy's or Sage's side? Thanks. -- You received this message because you

[sage-devel] Re: Would it be a good idea to start working on a module on Population Dynamics?

for module development and distribution, i think that the sage_sample project is the way to go! it explains how to do continuous integration with any sage (stable) version, and it allows installing your module in a *very* convenient way (just do: $ sage -pip install --upgrade -v

[sage-devel] on reference manual pages for code which depends on optional packages

in the case of a mixed integer linear program (MILP), there are some solver backends which do not appear in the html doc . i think that it is

[sage-devel] Re: "execution error" when opening the Sage Jupyter Notebook with the SageMath-7.6.app

it seems to be something with the 10.12 upgrade: https://github.com/jupyter/notebook/issues/2438 https://stackoverflow.com/questions/44057601/ipython-notebook-will-not-start-on-command-line hope it helps, Marcelo El martes, 4 de julio de 2017, 15:49:49 (UTC+2), Sébastien Labbé escribió: > >

[sage-devel] Re: vectorial symbolic expression

i also think that relations involving vectors and matrices would be nice, like `sage: ex = vector([x^2+y, y]) == vector([0, 1])`. in fact it exists in trac (with matrices): https://trac.sagemath.org/ticket/5201 El viernes, 9 de junio de 2017, 18:16:39 (UTC+2), LudJam escribió: > > Sage consider

[sage-devel] Re: Bug in a "simple" integration

Sage has `max_symbolic`: sage: var('x0, x1, x2'); sage: integrate(integrate(integrate(1,x2,max_symbolic(x0,x1),1),x1,0,1),x0,0,1) 1/3 .. i'm pretty sure Nils meant: symb_max(x,y)=(x+y)/2+abs(x-y)/2 which gives the same result: sage:

[sage-devel] Re: inconsistency in docstring of MIP domain

This is now #23041. .. Are you dcoudert ? I see 20 sage developers named David, but only 1 with an Inria affiliation :D (ps: here i can only read "david@inria.fr") El domingo, 21 de mayo de 2017, 10:22:05 (UTC+2), david@inria.fr escribió: > > Yes, please open a ticket to update

[sage-devel] inconsistency in docstring of MIP domain

In `mip.pyx`, there is: {{{ A mixed integer linear program can give you an answer: ... #. By default, all variables are non-negative. We remove that constraint via ``p.set_min(variable, None)``, see :meth:`set_min `. }}} There's also this text in `class MixedIntegerLinearProgram`: {{{

Re: [sage-devel] Why do Polyhedron objects inherit from "Element"?

Does this shed some light to [#15253](https://trac.sagemath.org/ticket/15253) ? El viernes, 5 de mayo de 2017, 8:07:02 (UTC+2), jplab escribió: > > > > > >> > The reason to wonder is that it seems to provide methods to a >> polyhedron >> > object which make no sense: >> > >> > >> >

Re: [sage-devel] Re: Timeout for doctests.

escribió: > > Hello Marcelo, > > Please have a look at > >https://trac.sagemath.org/ticket/19519 > > Vincent > > On 08/05/2017 10:35, mforets wrote: > > Hi, > > i wanted to know if there is a keyword that can be put next to a doctest > to > > m

Re: [sage-devel] Re: Timeout for doctests.

constraint. El lunes, 8 de mayo de 2017, 10:44:33 (UTC+2), David Roe escribió: > > > > On Mon, May 8, 2017 at 4:35 AM, mforets <mfo...@gmail.com > > wrote: > >> Hi, >> i wanted to know if there is a keyword that can be put next to a doctest >> to measure pe

[sage-devel] Re: Timeout for doctests.

Hi, i wanted to know if there is a keyword that can be put next to a doctest to measure performance with respect to computation time, like: sage: possibly_long_calculation(..) # timeout 600s 0 this is seems item 1) in this thread's OP, hence i'm attaching this question here (but please

Re: [sage-devel] Re: More SageMath tutorials: a repository for sharing and collective authoring

can you CC me for the translation of "Calcul Mathématique avec Sage" ? in trac/github i'm "mforets" in the long term i look forward to contributing to a Spanish version! El jueves, 4 de mayo de 2017, 5:21:15 (UTC+2), Nicolas M. Thiéry escribió: > >Dear Domi

[sage-devel] document Paley construction & special matrices

There's an (old) ticket with code for special matrices that could be merged soon, if someone who knows about *Paley matrices* can continue with the doc + some example ! See: https://trac.sagemath.org/ticket/13703 for further info. I've added the special matrices file (special.py) to the

[sage-devel] Re: Name symbolic expressions

El lunes, 17 de abril de 2017, 7:17:38 (UTC+2), Aidan escribió: > > Marcelo, > > Could you be persuaded to turn this into the beginnings of a standalone >> document detailing the inner workings of symbolic functions? I think that >> would be a great addition to the documentation. >> > > I

[sage-devel] add one extra example for integration?

this is to suggest adding this example (or a better one) in the global integrate method or somewhere else (the integrate method at multi_polynomial_libsingular.pyx? the problem is that that one seems to be for indefinite integrals only?) : {{{ For polynomial functions, if the integration

[sage-devel] Re: Name symbolic expressions

Dear Aidan, Do you have a trac account? I didn't find you there. Your interesting question has triggered a very detailed answer by Nils, and other have suggested to turn it into proper documentation. As someone who is in the process of learning the internals of Sage too, I also think that

[sage-devel] Re: integration algorithms

Hi, In the ticket of Laplace transform (see trac ticket #22422) I have the same dilemma. One could: 1- do nothing (keeping the same behaviour as, say, `symbolic_sum`), expecting that the user asks for inline help, figures out there is an 'algorithm' argument that can be changed, and tries