I was asked to test a hypothesis about skew-symmetric matrices, so I'll
generate some at random.
Could this kind of function be useful to others? If so, would best way for
it be to add algorithm='skew-symmetric' to
sage.matrix.constructor.random_matrix()?
--
Jori Mäntysalo
On Wed, 8 Apr 2015, Vincent Delecroix wrote:
It would definitely be useful (at least to me). But the word
algorithm looks strange to me. What if we do want a unimodular
skew-symmetric matrix? I would rather go for keywords
sage: random_matrix(ZZ, 4, unimodular=True, skew_symmetric=True)
I
We have Sage version 6.4 running. It is run by
su -c 'nohup authbind --deep .../sage-6.4/sage -c notebook(secure=true,
interface=\\, port=443, timeout=...,
server_pool=[\sagecalc@localhost\]) ... ' - sagegui
i.e. id sagegui runs notebook interface and sagecalc runs computations.
For
About random matrices:
Random integer matrices. With no arguments, the majority of the entries
are -1 and 1, never zero, and rarely large. ::
sage: random_matrix(ZZ, 5, 5)
[ -8 2 0 0 1]
[ -1 2 1 -95 -1]
[ -2 -12 0 0 1]
[ -1 1
It would definitely be useful (at least to me). But the word
algorithm looks strange to me. What if we do want a unimodular
skew-symmetric matrix? I would rather go for keywords
sage: random_matrix(ZZ, 4, unimodular=True, skew_symmetric=True)
[ 0 0 5 -1]
[ 0 0 6 -1]
[-5 -6 0 1]
[ 1 1 -1
It seems your system gcc is interfering
make[9]: Leaving directory
`/home/steven/Documents/Softwares/sage-6.5/local/var/tmp/sage/build/r-3.1.2.p0/src/src/library/tools/src'
make[8]: Leaving directory
On Tuesday, April 7, 2015 at 8:43:58 PM UTC+2, Jean-Pierre Flori wrote:
On Tuesday, April 7, 2015 at 6:56:56 PM UTC+2, vdelecroix wrote:
Hello,
We currently ship two implementations of floating point complex numbers:
- ComplexField: home made implementation based on two mpfr for the
On 2015-04-08 18:05, Frédéric Chapoton wrote:
What command exactly did you run ?
nice ./sage --patchbot
Did you choose a specific ticket ?
No.
Could you please try to use the patchbot 2.3.2 with safe-only set to
False ?
I have no idea what that means.
--
You received this message because
I have tried your suggestion, but it still doesn't work.
I also tried SAGE_INSTALL_GCC=yes make, it failed.
My system gcc version is 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
On Wednesday, April 8, 2015 at 5:54:24 PM UTC+8, François wrote:
It seems your system gcc is interfering
make[9]: Leaving
Exterior algebras were included as part of
http://trac.sagemath.org/ticket/15300 (which was merged into Sage 6.4).
sage: E.x,y = ExteriorAlgebra(QQ)
sage: a = x * y + x - 3*y / 2; a
x^y + x - 3/2*y
sage: a.interior_product(x)
y + 1
sage: a.interior_product(y)
-x - 3/2
Great. Any
Hello,
since there seems no permanent maintainer of Pynac I propose
to do the next release of Pynac. I have already transferred the
source/history as planned to github at:
https://github.com/rwst/pynac
Benjamin Hackl has also made a pull request there for the issue
in #15846 and I'm planning to
since there seems no permanent maintainer of Pynac I propose
to do the next release of Pynac. I have already transferred the
source/history as planned to github at:
https://github.com/rwst/pynac
Ralf, this sounds like a fine idea. Burcin, I'm sure you have no
objections?
One thing I
On Wednesday, April 8, 2015 at 2:55:27 PM UTC+2, kcrisman wrote:
One thing I would definitely make sure of is to try to update with the
upstream Ginac source as possible.
Agree. It looks like the last version sync was GiNaC-1.6.2/Pynac-0.2.3
in 2011-May, with one last isolated commit by
On 2015-04-07 20:39, Frédéric Chapoton wrote:
sage -i http://chapoton.perso.math.cnrs.fr/patchbot-2.3.2.spkg
I just installed this on arando and it doesn't work, the patchbot exits
immediately with
Getting trusted author list...
WARNING: Do not use this copy of sage while the patchbot is
Hello,
Could you please try (with 2.3.2)
./sage -patchbot --skip-base=True
and
./sage -patchbot --safe-only=True
By the way, you can see the options using
./sage -patchbot --help
I am working now to add more info here.
Le mercredi 8 avril 2015 18:08:35 UTC+2, Jeroen Demeyer a écrit :
On
On Wed, 8 Apr 2015 05:55:27 -0700 (PDT)
kcrisman kcris...@gmail.com wrote:
since there seems no permanent maintainer of Pynac I propose
to do the next release of Pynac. I have already transferred the
source/history as planned to github at:
https://github.com/rwst/pynac
Ralf, this
On Wednesday, April 8, 2015 at 9:04:01 PM UTC+2, Burcin Erocal wrote:
I had registered pynac as an organization on github a while ago. I just
sent Ralf an invitation to be an admin.
Also there is now
https://github.com/pynac/pynac
with a branch containing the first commits syncing it with
On 2015-04-08 17:05, Jeroen Demeyer wrote:
On 2015-04-07 20:39, Frédéric Chapoton wrote:
sage -i http://chapoton.perso.math.cnrs.fr/patchbot-2.3.2.spkg
I just installed this on arando and it doesn't work
Let me add that this is a regression from patchbot-2.3.1 to patchbot-2.3.2
--
You
Ok, thanks a lot for the feedback. I will investigate. But Arando was
running smoothly with 2.3.1, so please get back to that for this machine
for the moment.
What command exactly did you run ? Did you choose a specific ticket ?
Could you please try to use the patchbot 2.3.2 with safe-only set
Great. Any other Grassmann stuff beyond this? (E.g. regressive
product.) Is this interface with similar functionality in Singular or
elsewhere (and/or the differential forms/manifolds folks)?
I didn't implement anything like that as I wanted to do the relationship
with Lie algebras
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