Looks like a bug, can you open a ticket and perhaps post a patch? I can review it.
On Friday 27 Apr 2012, [email protected] wrote: > Today I was just doing some college work and I found an error computing the > Smith form of a Matrix (over GF(2)). > > > sage: AA = matrix(Zmod(2), [[1,1], [1,0], [0,1]]) > sage: AA.smith_form() > > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > File "_sage_input_100.py", line 10, in <module> > exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 > -*-\\n" + > _support_.preparse_worksheet_cell(base64.b64decode("QUEuc21pdGhfZm9ybSgp") > ,globals())+"\\n"); execfile(os.path.abspath("___code___.py")) File "", > line 1, in <module> > > File "/tmp/tmpXWhShB/___code___.py", line 2, in <module> > exec compile(u'AA.smith_form() > File "", line 1, in <module> > > File "matrix2.pyx", line 10512, in sage.matrix.matrix2.Matrix.smith_form > (sage/matrix/matrix2.c:49285) File "matrix_mod2_dense.pyx", line 1666, in > sage.matrix.matrix_mod2_dense.Matrix_mod2_dense.submatrix > (sage/matrix/matrix_mod2_dense.c:9696) TypeError: submatrix() takes > exactly 4 positional arguments (2 given) > > > When I looked at the code, it seemed that "Matrix Mod2" submatrix doesn't > have the parameters "nrows , ncols" as optional (like the "Matrix" > submatrix method). > > (If necessary: I have Sage 4.8.0 installed in Ubuntu 12.04 (32 bits)). Cheers, Martin -- name: Martin Albrecht _pgp: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8EF0DC99 _otr: 47F43D1A 5D68C36F 468BAEBA 640E8856 D7951CCF _www: http://martinralbrecht.wordpress.com/ _jab: [email protected] -- To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
