I'm trying to compute some homology stuff by finding the smith normal form of (fairly) large matrices. I do the following: A = Matrix(IntegerModRing(2),[[1,0,2],[1,0,1]]) A.smith_form() and I get the following error: TypeError Traceback (most recent call last) <ipython-input-6-23e95c6be019> in <module>() ----> 1 A.smith_form() /Users/.../builds/sage-6.1.1/local/lib/python2.7/site-packages/sage/matrix/matrix2.so in sage.matrix.matrix2.Matrix.smith_form (sage/matrix/matrix2.c:60007)() /Users/.../builds/sage-6.1.1/local/lib/python2.7/site-packages/sage/matrix/matrix_mod2_dense.so in sage.matrix.matrix_mod2_dense.Matrix_mod2_dense.submatrix (sage/matrix/matrix_mod2_dense.c:10429)() TypeError: submatrix() takes exactly 4 positional arguments (2 given) Looking at the code, line 12413 (mm = t.submatrix(1,1) ) only passes two arguments while the actual sub matrix function takes 5 arguments (itself, which doesn't count, lowr, lowc, nrows, ncols). Since the integers mod 2 are a field, this "should" be working in theory. The integers mod 3 and the integers both work. Any thoughts?
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