Hi Sage Devs,
I just received this email which links to a report about "global
digital math libraries" and also a long and opinionated document by
somebody named Nelson Beebe. Since Sage is mentioned a few times in
both documents, I thought I would forward them, since maybe some Sage
developers m
Hey William,
I will also be at the Joint Meetings, although I'm not entirely sure how
much time I will have to help with the booth.
Best,
Travis
On Wednesday, September 10, 2014 9:02:42 PM UTC-7, Anne Schilling wrote:
>
> Hi William,
>
> I will be at the Joint Meetings.
>
> Anne
>
> On Wedne
I think most of the problems here come from the fact that we're using the
wrong objects to do things. For many things, it makes much more sense to
use permutations as a product of cylces and store them this way etc. Maybe
the one that should be used here is more a "PermutationGroupElement" (I
never
sorry some keyboard shortcut has sent the post. I was saying:
def C(*args): #C for "cycle"
return Permutation([ args ])
and then for (1, 2, 3)(4, 5) I type C(1, 2, 3) * C(4, 5). I got very used
to it.
cheers
Pierre
On Thursday, September 11, 2014 2:12:21 PM UTC+2, Pierre wrote:
>
> Hi all,
Hi all,
Here are a few suggestions:
(1) permutations have a to_matrix() method; permuting the rows of M
according to the permutation sigma can be done by
M= M * sigma.to_matrix()
and for the rows:
M= sigma.to_matrix().transpose() * M
Of course there is a debate about the behaviour of to_matr
On Wednesday, September 10, 2014 8:29:26 PM UTC+2, wstein wrote:
>
> Woops -- well I'm officially interested in mentoring something in number
> theory.
>
>
ok, good. i'll register sage and keep you in the loop.
h
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> I would also be very happy if 1-based permutations were not at the same
> time 0-based words, i.e.:
>
> sage: Permutation([3,2,1])(1)
> 3
> sage: Permutation([3,2,1])[1]
> 2
>
I understand your concern but on the other hand, the following behavior is
good:
sage: Permutation([3,2,1])
[3, 2, 1]
s
Yooo !
> Well, there are two ways to make this consistent:
>
> 1) it being deprecated and removed, eventually.
> i.e. things like Permutation((3,5,7))
> must become Permutation(['(3,5,7)'])
>
> 2) things like Permutation((3,5,7),(1,2),(42,41))
> should be allowed as well.
>
> I'd much pre
On 2014-09-11, 'Martin R' via sage-devel wrote:
> Am Donnerstag, 11. September 2014 01:36:40 UTC+2 schrieb Nils Bruin:
>>
>> On Wednesday, September 10, 2014 10:54:06 AM UTC-7, Nils Bruin wrote:
>>>
>>> On Wednesday, September 10, 2014 10:38:50 AM UTC-7, Nils Bruin wrote:
sage: Permutati
Am Donnerstag, 11. September 2014 01:36:40 UTC+2 schrieb Nils Bruin:
>
> On Wednesday, September 10, 2014 10:54:06 AM UTC-7, Nils Bruin wrote:
>>
>> On Wednesday, September 10, 2014 10:38:50 AM UTC-7, Nils Bruin wrote:
>>>
>>> sage: Permutation([0,1,2])
>>>
>>
> In fact, one CAN see from this lis
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