#13417: Improved iteration on finite \ZZ-submodules and vector spaces over
finite
fields
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Reporter: tfeulner | Owner: AlexGhitza
Type: enhancement | Status: new
Priority: major | Milestone: sage-5.4
Component: algebra | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors: Thomas Feulner
Merged in: | Dependencies:
Stopgaps: |
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This patch defines an iterator class for finite \ZZ-submodules and
especially for subspaces over finite fields.
It improves the running times of this computations significantly:
{{{
sage: from sage.modules.finite_submodule_iter import
FiniteFieldsubspace_iterator
sage: A = random_matrix(GF(2), 15, 100)
sage: X = A.row_space()
sage: x = [0 for _ in X] #long time #takes 7.12 seconds
sage: y = [0 for _ in FiniteFieldsubspace_iterator(A)] # takes 0.05
seconds
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13417>
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