Re: [sage-devel] matrices for the univeral cyclotomic field

2011-05-02 Thread Mike Hansen
On Fri, Apr 22, 2011 at 7:15 AM, Christian Stump wrote: > The problem is that, even though every element in the UCF has a fixed > degree, the elements in the matrix might all have different degrees; > moreover I cannot predict the degree, especially not when adding or > multiplying such matrices.

Re: [sage-devel] matrices for the univeral cyclotomic field

2011-04-22 Thread David Roe
> > Is there a fast way to store the data as a 2-dim array with entries > being dictionaries with keys being basis elements in the Zumbroich > basis, and with rational values? Any other suggestions? I don't have any particularly insightful ideas, but are you thinking about a 2d C array of Python

[sage-devel] matrices for the univeral cyclotomic field

2011-04-22 Thread Christian Stump
Hello there, I could need some help on how to store matrices over the universal cyclotomic field (UCF). Every element is stored as a linear combination of elements in the Zumbroich basis [1], which is similar to the standard basis for the cyclotomic field, but which makes it easy to convert elemen