#4569: problems with the Permutation constructor function
---------------------------+------------------------------------------------
Reporter: saliola | Owner: saliola
Type: defect | Status: new
Priority: minor | Milestone: sage-3.2.1
Component: combinatorics | Keywords:
---------------------------+------------------------------------------------
wdj pointed out in the comments to #4419:
{{{
{{{
sage: p = gap(Permutation('(1,2,3)'))
sage: q = gap(Permutation('()'))
---------------------------------------------------------------------------
ValueError Traceback (most recent call
last)
<snip>
ValueError: invalid literal for int() with base 10: ''
}}}
and this:
{{{
sage: q = gap(Permutation(()))
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
<snip>
TypeError: not enough arguments for format string
}}}
It seems to me you want Permutation to work like
PermutationGroupElement does here:
{{{
sage: p = gap(PermutationGroupElement('(1,2,3)'))
sage: q = gap(PermutationGroupElement('()'))
sage: gap.Group([p, q])
Group( [ (1,2,3), () ] )
sage: gap.Group([p]) == gap.Group([p, q])
True
}}}
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4569>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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