On Mon, Mar 15, 2010 at 3:47 PM, Robert Miller <[email protected]> wrote:
> Thanks for the tip, I'll keep digging!

I believe the problem is in M._mod_int(p):

sage: M = Matrix(ZZ, 300, 300, sparse=True)
sage: M
300 x 300 sparse matrix over Integer Ring (type 'print M.str()' to see
all of the entries)
sage: M.parent()
Full MatrixSpace of 300 by 300 sparse matrices over Integer Ring
sage: B = M._mod_int(7)
sage: B
300 x 300 sparse matrix over Ring of integers modulo 7 (type 'print
B.str()' to see all of the entries)
sage: B.parent()
Full MatrixSpace of 300 by 300 dense matrices over Ring of integers modulo 7




-- 
Robert L. Miller
http://www.rlmiller.org/

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