https://github.com/sagemath/sage/pull/21 aka
http://trac.sagemath.org/ticket/16672
On Thu, Jul 17, 2014 at 9:45 AM, Mahrud Sayrafi wrote:
> Hi,
>
> In this page:
> http://www.sagemath.org/doc/constructions/linear_algebra.html#eigenvectors-and-eigenvalues
> in the eigenvectors and eigenvalues sect
http://trac.sagemath.org/ticket/14229
On Friday, July 18, 2014 12:28:18 AM UTC+8, Robert Pollak wrote:
>
>
> Also, why do I need two steps here?:
>
> sage: solve([x==0, x!=1], x)
> [[x == 0, -1 != 0]]
> solve([x == 0, -1 != 0], x)
> [x == 0]
>
>
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Hi,
In this page:
http://www.sagemath.org/doc/constructions/linear_algebra.html#eigenvectors-and-eigenvalues
in the eigenvectors and eigenvalues section, in the end of second line
inside the parentheses says:
"(resp. PA=*PD*.)"
but it should be:
"(resp. PA=*DP*.)"
Thanks,
Mahrud
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You r
Also, why do I need two steps here?:
sage: solve([x==0, x!=1], x)
[[x == 0, -1 != 0]]
solve([x == 0, -1 != 0], x)
[x == 0]
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Am 17.07.2014 11:32, schrieb Robert Pollak:
> In fact, I do not even know how to create the "and" situation.
> The following should be "x<=2 and x>=0":
>
> sage: Polyhedron(ieqs=[(2,-1), (0,0)]).Hrepresentation()
> (An inequality (-1) x + 2 >= 0,)
Oops, mistake!
This should be
sage: Polyhedron(i
Am 16.07.2014 21:06, schrieb slelievre:
> Robert Pollak wrote:
> I see the following wrong results:
>
> sage: x<2 and x<1
> x < 2
> sage: x<2 or x<1
> x < 1
>
> The best way to manipulate logical combination of inequalities might be
> to use polyhedra.
Looking at the document
Am 16.07.2014 20:41, schrieb Nils Bruin:
> On Wednesday, July 16, 2014 1:25:03 AM UTC-7, robert.pollak wrote:
> sage: x<2 and x<1
> x < 2
> sage: x<2 or x<1
> x < 1
>
> That's because "and" and "or" are program flow constructs in python, as
> they are in C (they have "shortcut eval
