2018-10-11 15:20:46 +0100 received badge ● Taxonomist 2012-09-07 07:12:16 +0100 received badge ● Famous Question (source) 2011-09-14 02:04:29 +0100 received badge ● Notable Question (source) 2011-03-09 10:01:20 +0100 received badge ● Popular Question (source) 2010-10-14 23:11:12 +0100 received badge ● Student (source) 2010-10-14 23:11:11 +0100 received badge ● Scholar (source) 2010-09-29 18:26:01 +0100 marked best answer Changing number of decimal digits displayed in output Here's one idea: pass the matrix to a low-precision ring before printing it -- this won't change the original matrix, just the printed version: sage: CC10 = ComplexField(prec=10) sage: MatPrint = MatrixSpace(CC10,3,3) sage: M = Matrix(CC,3,3,[sqrt(-n) for n in range(9)]) sage: M.parent() Full MatrixSpace of 3 by 3 dense matrices over Complex Field with 53 bits of precision sage: M [ 0 1.00000000000000*I 8.65956056235493e-17 + 1.41421356237309*I] [1.06057523872491e-16 + 1.73205080756888*I 2.00000000000000*I 1.36919674566051e-16 + 2.23606797749979*I] [1.49987988652185e-16 + 2.44948974278318*I 1.62005543721758e-16 + 2.64575131106459*I 1.73191211247099e-16 + 2.82842712474619*I] sage: MatPrint(M) [ 0 1.0*I 8.7e-17 + 1.4*I] [1.1e-16 + 1.7*I 2.0*I 1.4e-16 + 2.2*I] [1.5e-16 + 2.4*I 1.6e-16 + 2.6*I 1.7e-16 + 2.8*I] sage: MatPrint(M).parent() Full MatrixSpace of 3 by 3 dense matrices over Complex Field with 10 bits of precision sage: M.parent() Full MatrixSpace of 3 by 3 dense matrices over Complex Field with 53 bits of precision  There is also a Trac ticket for this, with a patch, but work on it seems to have stalled . . . if you decide you need to use it, you can check the developer guide for how to apply patches to Sage. 2010-09-29 16:37:13 +0100 asked a question Changing number of decimal digits displayed in output I am doing some computations with large matrices over the complex numbers. When these matrices are outputted, the entries appear, for example, as [ 0.03661165235? - 0.08838834765?I 0.21338834765? + 0.08838834765?I 0.03661165235? + 0.08838834765?*I etc I would like to change it so that the output only displays each entry to 3 decimal places, so that they are easier to see. Is there a way to do this? Is there a way to do this that doesn't alter the number of digits stored? For reference, my input is P8 = diagonal_matrix([1,1,1,0,0,0,0,1,1,0,0,0, 0,1,1,1]) UP8U.inverse() where U is a previously defined matrix with complex entries. Thanks!