#15817: Bug in computation of moliens series
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Reporter: | Owner:
nborie | Status: needs_review
Type: | Milestone: sage-6.4
defect | Resolution:
Priority: | Merged in:
critical | Reviewers:
Component: group | Work issues:
theory | Commit:
Keywords: | 6149bbdc55692816d9df2308d0c02d2028f3a37f
moliens series | Stopgaps:
Authors: |
Frédéric Chapoton |
Report Upstream: N/A |
Branch: |
u/chapoton/15817 |
Dependencies: |
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Comment (by chapoton):
First one '''does not''' work.
Second one '''does''' work correctly.
The third example '''does not''' work. This is the trivial group.
{{{
sage: G = PermutationGroup([[(5,)]])
sage: G
Permutation Group with generators [()]
sage: G.cardinality()
1
sage: G.molien_series()
0
}}}
which does not look correct to me, should be `(1-x)**5`
Maybe the current algo only work for groups with no fixed points ?
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Ticket URL: <http://trac.sagemath.org/ticket/15817#comment:10>
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