Hi,
With some other French Colleagues, we organize a "mini-symposium"
about Sage at the Congress of the French Mathematical Society in May
(see http://smai.emath.fr/smai2011/). There will be some short talks (30
mn) about Sage in different domains of Applied Maths, even in Industrial
fields.
Hi Robert,
On 28 Dez., 01:27, Robert Bradshaw
wrote:
> ... You're working on
> moving modules over to the new coercion framework, right?
Yes.
> > But how does one
> > define an action? I guess that one is supposed to use
> > sage.categories.action, but so far it has no example at all.
>
> http:
On 28 Dez., 09:46, Simon King wrote:
> Moreover, sage.matrix.action.MatrixMatrixAction is implemented by a
> _call_ method that has the signature
> cpdef Element _call_(self, g, s)
> Hence, essentially it is a map (not a functor) from GxS to S
... or actually from GxS to something into which S
well, soon one should be able to solve semidefinite programming
programs in Sage
(I have a an interface with cvxopt almost done)
On Dec 28, 4:44 pm, Thierry Dumont wrote:
> Hi,
>
> With some other French Colleagues, we organize a "mini-symposium"
> about Sage at the Congress of the French Mathema
> well, soon one should be able to solve semidefinite programming
> programs in Sage
> (I have a an interface with cvxopt almost done)
And Linear Programming as well as Integer Linear Programming are
already heavily used by graphs !
This used to belong to the numerical section, though it nowhas a
Hi!
I guess further discussion should be moved to sage-algebra. See
http://groups.google.com/group/sage-algebra/browse_thread/thread/1787794a7a42cfb5
Cheers,
Simon
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On Tue, Dec 28, 2010 at 12:46 AM, Simon King wrote:
> Hi Robert,
>
> On 28 Dez., 01:27, Robert Bradshaw
> wrote:
>> ... You're working on
>> moving modules over to the new coercion framework, right?
>
> Yes.
>
>> > But how does one
>> > define an action? I guess that one is supposed to use
>> > s
Hi,
Some long-running (~30 minutes) calculations I needed to do recently
in Sage working with a student inspired me to write a python
memoization library which uses Google App Engine to cache the output
of (decorated) functions. This means that if multiple people are
working on the same project th
John H Palmieri writes:
> On Dec 22, 5:34 am, Cedric wrote:
>> I love SAGE but then there is one flaw in it that I find one of the
>> most severe in software-design of all. From my layman point of view
>> (which I'm sure is wrong and unjustified) a software that bundles
>> every single of its do
sage: A=matrix(QQ,2,range(4))
sage: B=matrix(ZZ,2,range(4))
sage: C=A.echelon_form()
sage: D=B.echelon_form()
sage: C.is_mutable()
True
sage: D.is_mutable()
False
Should C and D be different with regard to mutability? If not, should
both results be immutable? (I'd rather not have to handle both
On Tue, Dec 28, 2010 at 8:38 PM, Rob Beezer wrote:
> sage: A=matrix(QQ,2,range(4))
> sage: B=matrix(ZZ,2,range(4))
> sage: C=A.echelon_form()
> sage: D=B.echelon_form()
> sage: C.is_mutable()
> True
> sage: D.is_mutable()
> False
>
> Should C and D be different with regard to mutability? If not,
On Tue, Dec 28, 2010 at 6:46 PM, Aleksej Saushev wrote:
> John H Palmieri writes:
>
>> On Dec 22, 5:34 am, Cedric wrote:
>>> I love SAGE but then there is one flaw in it that I find one of the
>>> most severe in software-design of all. From my layman point of view
>>> (which I'm sure is wrong an
Hi Robert,
On 28 Dez., 23:41, Robert Bradshaw
wrote:
> > According to your post, it should be "A group action G x S rightarrow
> > S is a functor from G (considered as a category) to the category of
> > Morphisms of Sets", and in the code it should be
> > Functor.__init__(self, Groupoid(G), S.cat
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