#19397: Add support for homogeneous components of a filtered module
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Reporter: tscrim | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.10
Component: categories | Resolution:
Keywords: | Merged in:
Authors: Travis Scrimshaw | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
public/categories/homogeneous_components-19397|
ae81aa7c64064ba8de5598aa01210efac57088c9
Dependencies: #17096 | Stopgaps:
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Comment (by tscrim):
However there is a technical problem with doing that in the short-term in
that `submodule` currently does not differentiate between coordinate rings
and base rings (think `ZZ`-submodule in a `QQ`-module). See also Jeroen's
comments in #18310.
So if we were decided to do do the above, then we should add coordinate
ring support in #19448 and make that a dependency of this one.
Alternatively we could just raise a `NotImplementedError` for now if the
module and base ring are both graded.
--
Ticket URL: <http://trac.sagemath.org/ticket/19397#comment:10>
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