#16399: Matrix stack doesn't coerce to a common parent
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Reporter: tscrim | Owner: tscrim
Type: defect | Status: new
Priority: major | Milestone: sage-6.3
Component: coercion | Resolution:
Keywords: matrix stack | Merged in:
coercion | Reviewers:
Authors: | Work issues:
Report Upstream: N/A | Commit:
Branch: u/chapoton/16399 | 098d574aa98441e4067178a4b8913c88ebc0f6b8
Dependencies: | Stopgaps:
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Changes (by chapoton):
* commit: => 098d574aa98441e4067178a4b8913c88ebc0f6b8
* branch: => u/chapoton/16399
Comment:
I have tried to look at the code. Apparently, one only tries to change the
base ring of the bottom matrix. But of course, the coercion could be the
other way, or there could be some complicated way to find a common
coercion.
I have made a preliminary attempt, very incomplete.
----
New commits:
||[http://git.sagemath.org/sage.git/commit/?id=7b1807808cb638a2f064b78a71ad01f74303bddb
7b18078]||{{{trac #16399 first naive try}}}||
||[http://git.sagemath.org/sage.git/commit/?id=098d574aa98441e4067178a4b8913c88ebc0f6b8
098d574]||{{{trac #16399 now for sparse matrices}}}||
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Ticket URL: <http://trac.sagemath.org/ticket/16399#comment:1>
Sage <http://www.sagemath.org>
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