Hi Evrim,
On 2015-05-15, Evrim Ulu wrote:
> sage: f
> x^6 + a*x^5 + (a + 1)*x^4 + (a^2 + a + 1)*x^3 + (a^2 + 1)*x^2 + (a + 1)*x +
> a^2 + a + 1
> sage: f.parent()
> Univariate Polynomial Ring in x over Finite Field in a of size 2^3
> sage: R
> Multivariate Polynomial Ring in l0, l1, l2, f0, f1,
Hi Evrim!
On 2015-05-18, Simon King wrote:
> I did some tests, and found that I could not construct *any* isomorphism
> of field extensions. Does anyone know how to construct an isomorphism
> between GF(8,'a') and GF(8,'h') leaving the prime field invariant?
Aha! This is how it works:
sage: fro
On 18/05/15 11:43, Simon King wrote:
> Hi Evrim!
>
> On 2015-05-18, Simon King wrote:
>> I did some tests, and found that I could not construct *any* isomorphism
>> of field extensions. Does anyone know how to construct an isomorphism
>> between GF(8,'a') and GF(8,'h') leaving the prime field i
Hi Vincent,
On 2015-05-18, Vincent Delecroix <20100.delecr...@gmail.com> wrote:
> Or even simpler for that step
>
> sage: Ka = GF(8,'a')
> sage: Kh = GF(8,'h')
> sage: Hom(Ka,Kh)([Kh.gen()])
> Ring morphism:
> From: Finite Field in a of size 2^3
> To: Finite Field in h of size 2^3
> Defn:
Hi all:
This issue is undocumented and seems odd to me. I could not find it
mentioned in sage-support before.
sage: Gamma1 = graphs.CompleteGraph(4); Gamma1
Complete graph: Graph on 4 vertices
sage: V1 = Gamma1.vertices(); V1
[0, 1, 2, 3]
sage: E1 = Gamma1.edges(); E1
[(0, 1, None),
(0, 2, None)
Hello,
This looks like a bug in the method incidence_matrix itself
def incidence_matrix(...):
...
cols.sort()
return matrix(cols, sparse=sparse).transpose()
In other words, the matrix is sorted before being returned and there is
no correspondance with anything!
Vincent
PS: BTW, thi
It is working properly now, thanks again!!
Daniele
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Moreover, for non oriented graph the Sage definition does not fit with
wikipedia... I opened the trac ticket
http://trac.sagemath.org/ticket/18440
Vincent
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On Mon, May 18, 2015 at 7:51 AM, Vincent Delecroix
<20100.delecr...@gmail.com> wrote:
> Moreover, for non oriented graph the Sage definition does not fit with
> wikipedia... I opened the trac ticket
>
> http://trac.sagemath.org/ticket/18440
>
Thank you.
In case it's of any interest, the code
You can set
SAGE_SERVER=...
to a mirror that is reachable behind your firewall. or use the source
tarball.
On Monday, May 18, 2015 at 1:03:14 PM UTC+2, Emmanuel Charpentier wrote:
>
> Dear list,
>
> I am aware that sagemath.org is currently migrating from UW to SMC. This
> seems to have serio
Dear Volker,
Le lundi 18 mai 2015 14:08:02 UTC+2, Volker Braun a écrit :
>
> You can set
>
> SAGE_SERVER=...
>
> to a mirror that is reachable behind your firewall.
>
That was my second attempt (see what I posted). It didn't work either.
> or use the source tarball.
>
I'm trying to avoid that
On 18/05/15 14:06, David Joyner wrote:
> On Mon, May 18, 2015 at 7:51 AM, Vincent Delecroix
> <20100.delecr...@gmail.com> wrote:
>> Moreover, for non oriented graph the Sage definition does not fit with
>> wikipedia... I opened the trac ticket
>>
>> http://trac.sagemath.org/ticket/18440
>>
>
>
On Mon, May 18, 2015 at 8:30 AM, Vincent Delecroix
<20100.delecr...@gmail.com> wrote:
> On 18/05/15 14:06, David Joyner wrote:
>> On Mon, May 18, 2015 at 7:51 AM, Vincent Delecroix
>> <20100.delecr...@gmail.com> wrote:
>>> Moreover, for non oriented graph the Sage definition does not fit with
>>> w
No such luck : My cellphone no longer gives me access to that (it did about
3 hours before for a different machine with no wired connection. Worked
like a charm).
Something is fishy here... but I do not know the Sage build architecture
well enough to diagnose it.
I suppose I'll have to fall ba
Vincent, thanks for the easy solution,
Simon, thanks for the internals, and a quick lecture here.
Below is what i've got.
Best,
evrim.
Ka. = GF(8,'a')
Kh. = GF(8,'h')
hom1 = Ka.hom([Kh.gen()])
R1. = Ka[]
R2. = Kh[]
F, R = R2.construction()
print F # This is a functor of rings that creates a
On Monday, May 18, 2015 at 2:43:46 AM UTC-7, Simon King wrote:
> - There are ways to make the conversion automatic, but I would recommend
> against it (perhaps it is safer to use K2.register_conversion instead
> of K2.register_coercion?)
> - You can obtain a homomorphism and use it explicit
Thanks, I will wait for 6.7
On Sunday, May 17, 2015 at 12:39:00 PM UTC-5, Volker Braun wrote:
>
> Fixed in Sage 6.7-rc0 and later...6.7 should be out today.
>
>
> On Sunday, May 17, 2015 at 6:43:20 PM UTC+2, Luis Garcia-Puente wrote:
>>
>> After installing sage 6.6, I tried to install the opti
On Sunday, May 17, 2015 at 1:55:21 PM UTC-5, Dima Pasechnik wrote:
>
>
>
> On Sunday, 17 May 2015 17:43:20 UTC+1, Luis Garcia-Puente wrote:
>>
>> After installing sage 6.6, I tried to install the optional packages 4ti2,
>> macaulay2, and nauty but the command
>>
>
> please note that macaulay2 pa
Hello,
Is there a way to plot non-parametric curve of 2-variables f(x,y)=0?
I've seen the documentation always employs rational parametrization or uses
plot3d.
best,
evrim.
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I believe what you are looking for is “implicit_plot”
~Brian
On 05/18/2015 03:15 PM, Evrim Ulu wrote:
Hello,
Is there a way to plot non-parametric curve of 2-variables f(x,y)=0?
I've seen the documentation always employs rational parametrization or
uses plot3d.
best,
evrim.
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