Dear Andreas, dear GAP Forum, > > If I understand your problem correctly, you want to use the splitting field > of > the minimal polynomial. You can use the command SplittingField to create it. [...] > To use the commands Eigenvectors or Eigenvalues you have to embed the entries > of the matrix in the splitting field first. The result of > > gap> Eigenvectors( L, One(L)*mat ); > > may be what you have been searching for. exactly. Thanks.
It did not cross my mind that one must use "One(L)*mat" here rather than just "mat". IMHO this is inconsistent with the convention when you work with GF, as there GF(p) is a subset of GF(p^k), no need for such a cast. > An idea: Possibly your problem can be examined more efficiently over a finite > field, as your matrices have 0-1 entries only. well, not always (they are actually "collapsed adjacency matrices" of graphs). Best, Dmitrii. _______________________________________________ Forum mailing list [email protected] http://mail.gap-system.org/mailman/listinfo/forum
