Re: [sage-devel] Number fields without generators

2011-08-20 Thread John Cremona
On Sat, Aug 20, 2011 at 5:36 AM, Rob Beezer wrote: > I'm trying to compute some eigenspaces for matrices over number > fields, mostly because I can, in order to build some doctests. > Eigenspace routine uses the root_field() method on an irreducible > factor of a characteristic polynomial to creat

[sage-devel] Number fields without generators

2011-08-19 Thread Rob Beezer
I'm trying to compute some eigenspaces for matrices over number fields, mostly because I can, in order to build some doctests. Eigenspace routine uses the root_field() method on an irreducible factor of a characteristic polynomial to create a field containing eigenvalues. Then the routine tries to