The fact that this dies somewhere deep in the atlas internals probably means
that your CPU doesn't support one of the SSE instructions that atlas was
compiled with. I'd bet that if you compile Sage from sources on your machine
then it'll work.
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Ok, from this point of view see the point. But I dont know if it's
documented this way somewhere.
greatz
Am 28.12.2010 23:00, schrieb Iwao Kimura:
> Hi Johannes,
>
> I'm not sure but if we think gcd(2, 0) is the generator of the ideal
> generated by 2 and 0 in the rationals, we see gcd(2,0) is 1
Hi Johannes,
I'm not sure but if we think gcd(2, 0) is the generator of the ideal
generated by 2 and 0 in the rationals, we see gcd(2,0) is 1 because
the ideal is not zero (and QQ is a field :)
Best regards.
On Wed, Dec 29, 2010 at 6:33 AM, Johannes wrote:
> I got it solved. It's a type error:
Hi Volker,
Thank you for your message. I followed your suggestion and run Sage with
gdb. I agree with you that linbox and blas (ATLAS) are suspected.
Best regards
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| Sage Version 4.6, Release Date: 2010-10-30
I got it solved. It's a type error:
the matrix sing is a matrix over QQ.
If its a matrix over ZZ it works fine.
but why is gcd(2,0) = 1 for 2,0 as Rationals?
in my eyes its not well defined or should be the maximum of those values.
greatz
Am 28.12.2010 22:08, schrieb Johannes:
> Hi list,
> I've
Hi list,
I've a very confusing problem with some simple algorithm:
following setting: a matrix sing:
sage: sing
[ 3 0 1]
[-2 -1 -2]
[ 0 1 0]
sage: l = sings.column(2);l
(1, -2, 0)
#my algorithem, code see below:
sage: extgcd(l)
#some printoutput for debugging:
l: (1, -2, 0)
tlist: (-2, 0)
#th
Hi Dox,
I'll try to come up with something in the next month or so. Also, a
good way to help out with the development is to review the patch when
it comes out. All Sage code has to go through a review process before
it comes out, so this is a pretty important part of development. You
can just p
I have a matrix M=(A : B), where A is a (36, 24) matrix and B (36, 9) is a
matrix. I want reduce B by LLL algorithm. And also
want to change A (elementary row operation) according to the changes of B.
As an example during LLL if 10th row and 12th row
of B are interchanged, we also have to interch
Thank you very much.
On 28 December 2010 23:56, luisfe wrote:
> On Dec 28, 6:23 pm, Santanu Sarkar
> wrote:
> > Size of my matrix is (90, 36) with entries are around 2^1000. What is the
> > fastest
> > method to compute Hermite Normal Form?
>
> In that case, the fastest may be the default one
On Dec 28, 6:23 pm, Santanu Sarkar
wrote:
> Size of my matrix is (90, 36) with entries are around 2^1000. What is the
> fastest
> method to compute Hermite Normal Form?
In that case, the fastest may be the default one you are already
using. Note that computing the Hermite form is fast, the hard
Size of my matrix is (90, 36) with entries are around 2^1000. What is the
fastest
method to compute Hermite Normal Form?
In my matrix number of rows greater than number of columns. That is
A= random_matrix(ZZ, 90, 36). Then how can I calculate transformation
matrix
of LLL?
On 28 December 20
On Dec 28, 5:27 pm, Santanu Sarkar
wrote:
> Is there any faster method to compute Hermite Normal Form
> of a matrix A and corresponding transformation matrix? I use
> A.hermite_form(transformation=true). However it is very slow.
>
> Also is there any transformation matrix corresponding to the L
Is there any faster method to compute Hermite Normal Form
of a matrix A and corresponding transformation matrix? I use
A.hermite_form(transformation=true). However it is very slow.
Also is there any transformation matrix corresponding to the LLL algorithm.
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You are not running out of memory in that computation if you have 3GB of
ram. It seems like something in linbox (which is used for matrices of that
size) dies during the computation. I also recently ran into some issues with
linbox and blas, and was wondering if they are related. Can you run sag
On 27 Dez., 20:37, Cyrille Piatecki
wrote:
> Quoting emil :
>
> Dear Emil,
> first of all, I leave for the end of the week tomorrow so if you
> answer this message, don't be astonished if I do not react.
>
> Yesterday, it was impossible to download from the swiss domain so I went on
> http://b
Hi Dan,
Thank you for your interest. My Ubuntu box has 3GB memory.
I tried several times (via Web interface, via terminal, exit Sage and
invoke new Sage session...), and I always can reproduce same run-time error.
I can install more 3GB memory after holiday and I'll try again.
Best regards.
On
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2
Is it possible to create 3D scatterplots in sage?
By scatterplot I mean graph like this:
http://stackoverflow.com/questions/4439894/3d-scatterplots-in-sage
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On Tue, 28 Dec 2010 at 03:41PM +0900, Iwao Kimura wrote:
> On Save v4.6, (Ubuntu 10.04, 64bit), I found that
> {{{
> p = 103; identity_matrix(p).det()
> Traceback (most recent call last):
Hrm, that works fine for me -- using Ubuntu 10.10, 64bit, and on Ubuntu
10.04, 32 bit. I increased p up to abo
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