#6292: Converting elements in AbelianGroup to gap element
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Reporter: jlefebvre | Owner: joyner
Type: defect | Status: new
Priority: major | Milestone: sage-4.0.2
Component: group_theory | Keywords: AbelianGroup
Reviewer: | Author:
Merged: |
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Some trouble in converting elements in AbelianGroup to gap elements
For example we can do this;
{{{
sage: G = SymmetricGroup(5)
sage: g = G.list()[2]
sage: H = gap(G)
sage: g in H
True
}}}
But not this;
{{{
sage: G = AbelianGroup([2,2])
sage: g = G.list()[2]
sage: H = gap(G)
sage: g in H
[...]
TypeError: Gap produced error output
Variable: 'f0' must have a value
}}}
Similarly we can't go back the other way around.
That is we can do this;
{{{
sage: G = SymmetricGroup(5)
sage: H = gap(G)
sage: r = H.ConjugacyClasses()[2].Representative()
sage: type(r)
<class 'sage.interfaces.gap.GapElement'>
sage: r in G
True
sage: G(r)
(1,2)
}}}
But not this
{{{
sage: G = AbelianGroup([2,2])
sage: H = gap(G)
sage: r = H.ConjugacyClasses()[2].Representative()
sage: r
f1
sage: r in G
False
sage: G(r)
[...]
TypeError: Argument x (= f1) is of wrong type.
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6292>
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