Sorry for the noise.
Apparently one needs to import Matrix_gfpn_dense first, which is what
the cohomology module does.
Still, random_matrix(GF(5),20,implementation='meataxe') should work, but
it doesn't. And so doesn't
MatrixSpace(GF(5),4,implementation='meataxe'). I guess I'll open a
ticket for
To add to my confusion:
I also have p_group_cohomology installed, which makes extensive use of
matrix_gfpn_dense. And it still works. More precisely, when I import
something from the cohomology package, then suddenly the
matrix_gfpn_dense module becomes available:
sage: M =
random_matrix(GF(5)
Hi!
I just met a quite troublesome problem: I have MeatAxe installed in
Sage, and thus the optional extension sage.matrix.matrix_gfpn_dense was
available - till 30 minutes ago (I am sure that it was available, as I
did some timings with it).
Suddenly, after restarting Sage, the module has gone, i
