No, would be nice if there is one, which I just dont know of. There are
algorithmic solution for my problem the other way round (given the group
G, calculate the invariant ring I). But in my eyes the problem looks not
that hard. Most times you see the solution very fast without calcualting
anything
On Aug 13, 3:00 am, Simon King wrote:
> Hi Santanu, hi Benjamin,
>
> On 13 Aug., 06:23, Benjamin Jones wrote:
>
> > On Aug 12, 9:38 pm, Santanu Sarkar
> > See section 5.4.1 of:
>
> >http://docs.python.org/library/stdtypes.html
>
> I doubt that that is answering the question: "I have 64 bit in
Hi Johannes,
On 14 Aug., 19:54, Johannes wrote:
> Hi list
> I have given an Ideal I in the polynomial ring R and I need to know the
> minimal group G wich acts on I such that I is the Invariant Ring of R
> under the action of G.
Just out of curiosity: Do you have a reference for an algorithmic
Hi list
I have given an Ideal I in the polynomial ring R and I need to know the
minimal group G wich acts on I such that I is the Invariant Ring of R
under the action of G.
for example:
let R = CC.,
I the ideal generated by
let G \subset SL_3(CC) act by a e_i -> a x_i. If xi is a third primitive
I got my error, i mixed prod and cartesian_product.
Am 14.08.2011 16:50, schrieb Johannes:
> Hi list,
> i tried to compute the product of two matrix groups and run in a gap
> parsing error.
> Miniexample:
> g1 = MatrixGroup([Matrix(CC,[[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, -1, 0],
> [0, 0, 0, 1]])])
Hi list,
i tried to compute the product of two matrix groups and run in a gap
parsing error.
Miniexample:
g1 = MatrixGroup([Matrix(CC,[[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, -1, 0],
[0, 0, 0, 1]])])
g2 = MatrixGroup([Matrix(CC,[[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0],
[0, 0, 0, I]])])
g1.prod(g2)
thi
Hi Johannes,
On 14 Aug., 15:09, Johannes wrote:
> I have to deal with unit roots for some calculations.
I suppose you mean primitive roots of unity in CC?
> And for simplicity
> I want to give the n-th unit root a name (lets say xi) instead of
> dealing with numeric values.
> Up to know I solve
Hi list,
I have to deal with unit roots for some calculations. And for simplicity
I want to give the n-th unit root a name (lets say xi) instead of
dealing with numeric values.
Up to know I solved this by definig xi to be the solution of
$x^n -1 == 0$ for a given $n$ but how can I name a solution o
