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2011-04-13 06:25:28 +0200 | marked best answer | Symbolic matrices There is the Tensor module in sympy. If that is the type of thing that you're looking for (ie explicit indices). The was some code put on the sage devel group last year: abstract matrices, which allows basic manipulation of abstract matrices and vectors. It's not complete, but it does the basics and should be easy to extend if you need more. As far as I can tell, it hasn't been worked on since the original postings. I hope it's ok if I post the code here: (more) |

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2011-04-12 08:01:26 +0200 | asked a question | Symbolic matrices Hi, is it possible to define totally symbolic matrices. Something like So that c[i,j] = sum(a[i,k]*b[k,i],k,1,M) or do you really always need an non-symblic matrix size? If you really always need a non-symblic matrix type, is it possible to define the symbolic variables automatically? Something like Thanks! Manuel |

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