#14779: LibGAP exits when out of memory
----------------------------+-----------------------------------------------
Reporter: vbraun | Owner: joyner
Type: defect | Status: new
Priority: major | Milestone: sage-5.11
Component: group theory | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
----------------------------+-----------------------------------------------
{{{
sage: G=FreeGroup(2)
sage: G.inject_variables()
Defining x0, x1
sage: H=G.quotient([x0*x1^2])
sage: H.as_permutation_group()
gap: cannot extend the workspace any more!
...back to shell...
}}}
Older versions raised an error that we caught:
{{{
sage: sage: H.as_permutation_group()
---------------------------------------------------------------------------
ValueError Traceback (most recent call
last)
<ipython-input-5-8ec056aa16c3> in <module>()
----> 1 H.as_permutation_group()
/home/vbraun/opt/sage-5.10.rc2/local/lib/python2.7/site-
packages/sage/groups/finitely_presented.pyc in as_permutation_group(self,
limit)
667 coset_table =
self.gap().CosetTable(trivial_subgroup).sage()
668 except ValueError:
--> 669 raise ValueError('Coset enumeration exceeded
limit, is the group finite?')
670 from sage.combinat.permutation import Permutation
671 from sage.groups.perm_gps.permgroup import
PermutationGroup
ValueError: Coset enumeration exceeded limit, is the group finite?
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14779>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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