Hi Sage supporters, bump!
Is there really no answer to Ian Hambleton's question that he asked a month ago? Can it really be so difficult to do LLL_gram on a 6x6 integer matrix? Cheers, Simon Am Donnerstag, 20. Dezember 2012 00:07:03 UTC+1 schrieb William: > > I'm forwarding this to sage-support... > > On Dec 19, 2012 8:52 AM, "Ian Hambleton" <hamb...@mcmaster.ca<javascript:>> > wrote: > > > > Dear Professor Stein, > > I am trying to use the Sage diagonalization routine found in: > > > > > http://www.sagemath.org/doc/reference/sage/matrix/matrix_integer_dense.html > > > > The example given in the Sage documentation works fine, but the larger > example below does not complete (hours later) on my machine, or in running > Sage online through its webpage. > > > > Is this matrix too large, or have I made a mistake in the commands ? > > > > Any help you can provide would be most appreciated. > > > > best regards, > > > > Ian Hambleton > > > > PS: Is there a version which will accept matrices over finite fields or > rings Z/n ? > > > > > > sage: D=Matrix(IntegerModRing(), > [[-1,1,0,1,1,0],[1,-3,1,0,0,0],[0,1,-2,0,0,0],[1,0,0,-3,0,0],[1,0,0,0,-4,1],[0,0,0,0,1,-5]]);D > > [-1 1 0 1 1 0] > > [ 1 -3 1 0 0 0] > > [ 0 1 -2 0 0 0] > > [ 1 0 0 -3 0 0] > > [ 1 0 0 0 -4 1] > > [ 0 0 0 0 1 -5] > > sage: X = D.LLL_gram(); X > > sage: X.transpose() * D * X > > > > > > ----------------------------------------------------- > > > > Department of Mathematics & Statistics > > > > McMaster University > > > > 1280 Main St. West > > > > Hamilton, ON L8S 4K1, CANADA > > > > Phone: (905) 525-9140 x 27302 > > > > Fax: (905) 522-0935 > > > > Web: http://www.math.mcmaster.ca/ian/ian.html > > > > ----------------------------------------------------- > > > > > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
