On Saturday, July 13, 2013 2:22:41 AM UTC-7, Darij Grinberg wrote:
> But if Judson's book uses right-to-left and Sage uses left-to-right,
> shouldn't your materials actually become easier to use once the dust has
> settled?
>
Yes, of course. It is me who will have trouble adjusting to the new
You heard about this awhile ago, but it is finally happening -- we will be
moving over to a trac installation in a dedicated VM this upcoming
Wednesday evening PST. This will require a few hours of downtime to sync
the database over to the new machine.
Changes to be aware of:
1) trac notificatio
Hey everyone who's following #14772,
I don't want to change the patch, which has the multiplication in a
GlobalOptions class, since it's just lifts the previous options up (a
standard dict). Thus any change should depend on #14772 IMO. I'm not
attached to having multiplication be a global opt
Hi Nicolas, and hi all,
> - +1 on a parent option:
>
> sage: PermutationGroup(..., action='left')
>
> Note that this is consistent with what we do for finite set maps:
>
> sage: M = FiniteSetMaps([1, 2, 3], action = 'right')
>
> Maybe PermutationGroupElement will need to take a
On Sat, Jul 13, 2013 at 5:50 AM, Nicolas M. Thiery
wrote:
> Hi all,
>
> Thanks Darij for bringing up the issue, and everyone for your
> feedback! Here is my (strong for once) opinion on this issue.
+1 to everything in your strong opinion.
> Sorry I
> am taking off right now for vacation
On Thu, Jul 11, 2013 at 02:14:55PM -0700, defeo wrote:
>Just kidding. More seriously, reminds me of this work by Flajolet, Salvy
>and Zimmerman, which is at the heart of maple's combstruct:
>
>http://www.sciencedirect.com/science/article/pii/030439759190145R#
and of Sage's species (wh
Hi all,
Thanks Darij for bringing up the issue, and everyone for your
feedback! Here is my (strong for once) opinion on this issue. Sorry I
am taking off right now for vacations, so it's stated in a rush.
- I for myself usually prefer left composition for permutations (like
most combina
On 7/13/13 9:17 AM, Nathann Cohen wrote:
Hello everybody !!!
Have you ever seen this thing ?
https://github.com/mbostock/d3/wiki/Gallery
It's a javascript library which seems to handle quite a range of things,
and I am thinking of writing a patch that would let us draw Sage grap
Hello everybody !!!
Have you ever seen this thing ?
https://github.com/mbostock/d3/wiki/Gallery
It's a javascript library which seems to handle quite a range of things,
and I am thinking of writing a patch that would let us draw Sage graphs
using it instead of Matplotlib.
Perhaps
TypeError: unsupported operand parent(s) for '-': 'Symmetric group
algebra of order 5 over Rational Field' and 'Symmetric group algebra
of order 5 over Integer Ring'
I am disappoint...
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Hi Dima,
On Sat, Jul 13, 2013 at 1:26 PM, Dima Pasechnik wrote:
> IMHO it's a not as obsolete convention as you seem to imply; isn't e.g. Magma
> using the same convention as GAP?
> Not mentioning a lot of group theory literature...
I don't know anything about Magma, but what group theory litera
On 2013-07-12, darijgrinberg wrote:
> --=_Part_13473_7743396.1373672589533
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hello!
>
> While trying to do computations in symmetric group algebras today, I was
> shocked by the fact that Sage uses the convention that a product \pi \psi
> of t
I think this point (Volker's) is a very good one: if the action is
to be a right action then it should be implemented as such, just as
many group theorists write "i\sigma" for the image of i under \sigma
with a right action. Persumably such right actions can be implemented
in Sage so one would w
Hello again,
thanks for the reactions! Good to see that I'm not the only one who is
having headaches with the current system.
On Saturday, 13 July 2013 05:21:58 UTC+2, Rob Beezer wrote:
>Breaking doctests is one thing, breaking user code is another.
>I've written some rather extensi
On Saturday, July 13, 2013 1:43:09 AM UTC+2, darijgrinberg wrote:
> There is a further issue lurking in the background here. It *is* possible
> to make Sage use the standard convention (first \psi, then \pi), namely by
> setting a global variable (see
> http://trac.sagemath.org/sage_trac/ticket
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