#18310: Finite dimensional modules with basis: improved conversions to vectors
and
matrices
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Reporter: nthiery | Owner:
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-6.7
Component: linear algebra | Resolution:
Keywords: | Merged in:
Authors: Nicolas M. Thiéry | Reviewers: Travis Scrimshaw
Report Upstream: N/A | Work issues:
Branch: | Commit:
public/categories/fin_dim_modules_with_basis_vector_matrix-18310|
035418cccaab72f73565c50d3e5b6391d294a467
Dependencies: | Stopgaps:
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Comment (by nthiery):
Replying to [comment:18 jdemeyer]:
> Replying to [comment:17 nthiery]:
> > Gasp, another inconsistency: most other modules in Sage (polynomial
> > rings, matrix space, ...) don't define coordinate_ring: there it's
> > assumed that the coefficients of elements live in `base_ring`.
> That's easily worked around by defining `coordinate_ring` as an alias of
`base_ring` in the category code. Then it can be overridden in specific
cases where needed.
Yes. And making sure all the category (and users) code calls
`coordinate_ring` instead of `base_ring` whenever appropriate. That's
certainly doable, but we want to make sure we want this feature generally
before adding this little additional layer of complexity.
Anyway, that's for #10672.
--
Ticket URL: <http://trac.sagemath.org/ticket/18310#comment:19>
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