#17576: FreeModule.__contains__ is too lax in its test
-------------------------------------+-------------------------------------
Reporter: nbruin | Owner:
Type: task | Status: needs_review
Priority: trivial | Milestone: sage-6.5
Component: linear algebra | Resolution:
Keywords: | Merged in:
Authors: Peter Bruin | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/pbruin/17576-FreeModule_contains | 176e773ba68d3e56b91fb51c5ff20add97db5eaf
Dependencies: #10513 | Stopgaps:
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Changes (by {'newvalue': u'Peter Bruin', 'oldvalue': ''}):
* status: new => needs_review
* work_issues: add doctest =>
* author: => Peter Bruin
* priority: major => trivial
* dependencies: => #10513
* branch: => u/pbruin/17576-FreeModule_contains
* commit: => 176e773ba68d3e56b91fb51c5ff20add97db5eaf
* type: defect => task
Old description:
> See [https://groups.google.com/forum/#!topic/sage-support/ObKhoCN3KCs]:
> {{{
> sage: V = VectorSpace(RDF,3)
> sage: v2 = vector(RDF, [1, 2, 3, 4])
> sage: v2 in V
> True
> }}}
> The containment test for free modules
> `sage.modules.free_module.FreeModule_ambient.__contains__` doesn't bother
> testing that the *number* of entries matches the rank.
New description:
See [https://groups.google.com/forum/#!topic/sage-support/ObKhoCN3KCs]:
{{{
sage: V = VectorSpace(RDF,3)
sage: v2 = vector(RDF, [1, 2, 3, 4])
sage: v2 in V
True
}}}
The containment test for free modules
`sage.modules.free_module.FreeModule_ambient.__contains__` doesn't bother
testing that the *number* of entries matches the rank.
This is fixed by #10513; we just add a doctest.
--
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Ticket URL: <http://trac.sagemath.org/ticket/17576#comment:3>
Sage <http://www.sagemath.org>
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