On Feb 10, 3:18 am, Pierre <[email protected]> wrote:
Hi Pierre,
> surely there's an easy fix for this:
>
> sage: G= PermutationGroup([])
> sage: G
> Permutation Group with generators []
> sage: G.is_abelian()
<SNIP backtrace>
What Sage release are you running?
----------------------------------------------------------------------
| Sage Version 3.2.1, Release Date: 2008-12-01 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: G= PermutationGroup([]); G
Permutation Group with generators [()]
sage: G.is_abelian()
True
----------------------------------------------------------------------
| Sage Version 3.2.2, Release Date: 2008-12-18 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: G= PermutationGroup([]); G
Permutation Group with generators [()]
sage: G.is_abelian()
True
----------------------------------------------------------------------
| Sage Version 3.2.3, Release Date: 2009-01-05 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: G= PermutationGroup([]);G
Permutation Group with generators [()]
sage: G.is_abelian()
True
----------------------------------------------------------------------
| Sage Version 3.3.alpha6, Release Date: 2009-02-07 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: G= PermutationGroup([])
sage: G
Permutation Group with generators [()]
sage: G.is_abelian()
True
I.e. every somewhat current Sage release has that bug fixed.
Cheers,
Michael
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