# Selfes's profile - activity

 2020-09-04 22:51:44 +0100 received badge ● Notable Question (source) 2019-01-27 16:24:00 +0100 received badge ● Popular Question (source) 2017-04-25 15:21:53 +0100 commented answer How to create a Matrix with real numbers? Thank you very much. 2017-04-24 20:22:59 +0100 received badge ● Scholar (source) 2017-04-24 17:06:42 +0100 asked a question How to create a Matrix with real numbers? I try to create a matrix with real number. When I try to create one, I get a TypeError message Example: sage: Z = matrix(2,2) sage: Z[0,0] = sqrt(2) -------------------------------------------------------------------------- TypeError Traceback (most recent call last) in () ----> 1 Z[Integer(0),Integer(0)] = sqrt(Integer(2)) sage/matrix/matrix0.pyx in sage.matrix.matrix0.Matrix.__setitem__ (/build/sagemath/src/sage- 7.6/src/src/build/cythonized/sage/matrix/matrix0.c:8316)() sage/matrix/matrix0.pyx in sage.matrix.matrix0.Matrix._coerce_element (/build/sagemath/src/sage- 7.6/src/src/build/cythonized/sage/matrix/matrix0.c:9795)() sage/structure/parent.pyx in sage.structure.parent.Parent.__call__ (/build/sagemath/src/sage- 7.6/src/src/build/cythonized/sage/structure/parent.c:9844)() sage/structure/coerce_maps.pyx in sage.structure.coerce_maps.NamedConvertMap._call_ (/build/sagemath/src/sage-7.6/src/src/build/cythonized/sage/structure/coerce_maps.c:6402)() sage/symbolic/expression.pyx in sage.symbolic.expression.Expression._integer_ (/build/sagemath/src/sage- 7.6/src/src/build/cythonized/sage/symbolic/expression.cpp:8607)() TypeError: unable to convert sqrt(2) to an integer  Since I couldn't really find a way to create one in the documentation (at least I didn't find one), I would like to ask, if there is a easy solution to this. Thank you very much