ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Fri, 11 May 2012 09:01:50 +0200Quotient of CombinatorialFreeModulehttps://ask.sagemath.org/question/8966/quotient-of-combinatorialfreemodule/Hi,
I'm writing a small programm and came to the following problem: I have a list W os some objects, and works with the free module on it:
V=CombinatorialFreeModule(QQ,W)
Now I generate a list of (redundant) linear relation among element of W, ie a list of linear combination of elements of W which I want to be 0. So I make a matrix of all corresponding vectors. So if K is the sub vector space generated by the lines of my matrix, I want to know the best way to work in the quotient vector space V/K, ie choose a basis B of it and rewrite every linear combination of element of W as a linear combination of element of B. I can probably do soemthing by hand, for example by taking the echelon form of my matrix, but I would be happy to have a more convenient way of doing this.
Thanks !
Fri, 11 May 2012 09:01:50 +0200https://ask.sagemath.org/question/8966/quotient-of-combinatorialfreemodule/