#14711: Weak references in the coercion graph
-------------------------------------+-------------------------------------
       Reporter:  jpflori            |        Owner:  davidloeffler
           Type:  defect             |       Status:  needs_work
       Priority:  critical           |    Milestone:  sage-6.2
      Component:  number fields      |   Resolution:
       Keywords:  memleak, number    |    Merged in:
  field, QuadraticField              |    Reviewers:  Nils Bruin, Jean-
        Authors:  Simon King,        |  Pierre Flori
  Travis Scrimshaw, Jean-Pierre      |  Work issues:
  Flori                              |       Commit:
Report Upstream:  N/A                |  8e5fe42b226442ef1dc181de0838803f00b29638
         Branch:                     |     Stopgaps:
  public/ticket/14711                |
   Dependencies:                     |
-------------------------------------+-------------------------------------

Comment (by vbraun):

 Also:
 {{{
 sage -t --long src/sage/tests/book_schilling_zabrocki_kschur_primer.py
 **********************************************************************
 File "src/sage/tests/book_schilling_zabrocki_kschur_primer.py", line 619,
 in sage.tests.book_schilling_zabrocki_kschur_primer
 Failed example:
     ks3([3,2]).omega()
 Expected:
     Traceback (most recent call last):
     ...
     ValueError: t^2*s[1, 1, 1, 1, 1] + t*s[2, 1, 1, 1] + s[2, 2, 1] is not
     in the image of Generic morphism:
     From: 3-bounded Symmetric Functions over Fraction Field of Univariate
     Polynomial Ring in t over Rational Field in the 3-Schur basis
     To:   Symmetric Functions over Fraction Field of Univariate Polynomial
 Ring
     in t over Rational Field in the Schur basis
 Got:
     <BLANKLINE>
     Traceback (most recent call last):
       File "/home/release/Sage/local/lib/python2.7/site-
 packages/sage/doctest/forker.py", line 480, in _run
         self.execute(example, compiled, test.globs)
       File "/home/release/Sage/local/lib/python2.7/site-
 packages/sage/doctest/forker.py", line 839, in execute
         exec compiled in globs
       File "<doctest
 sage.tests.book_schilling_zabrocki_kschur_primer[214]>", line 1, in
 <module>
         ks3([Integer(3),Integer(2)]).omega()
       File "/home/release/Sage/local/lib/python2.7/site-
 packages/sage/combinat/sf/new_kschur.py", line 715, in omega
         return self.parent()(self.lift().omega())
       File "parent.pyx", line 1070, in
 sage.structure.parent.Parent.__call__ (sage/structure/parent.c:8858)
       File "morphism.pyx", line 431, in
 sage.categories.morphism.SetMorphism._call_
 (sage/categories/morphism.c:6519)
       File "/home/release/Sage/local/lib/python2.7/site-
 packages/sage/categories/modules_with_basis.py", line 1830, in preimage
         raise ValueError("{} is not in the image".format(f))
     ValueError: t^2*s[1, 1, 1, 1, 1] + t*s[2, 1, 1, 1] + s[2, 2, 1] is not
 in the image
 **********************************************************************
 }}}

--
Ticket URL: <http://trac.sagemath.org/ticket/14711#comment:258>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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