Opened 4 years ago

Last modified 4 years ago

#19328 new defect

Wrap automorphism group of groups better

Reported by: kcrisman Owned by:
Priority: major Milestone: sage-6.9
Component: group theory Keywords:
Cc: ncohen Merged in:
Authors: Reviewers:
Report Upstream: N/A Work issues:
Branch: Commit:
Dependencies: Stopgaps:

Description (last modified by tmonteil)

See this math.SX question and this ask question.

G = CyclicPermutationGroup(4)
H = CyclicPermutationGroup(2)
D=G.direct_product(H)
D.AutomorphismGroup()
<boom>

Okay, that's because you receive a tuple back. But

d = D[0]
d.AutomorphismGroup()
<boom for different and more annoying reason>

Also, there is no gap() method for such groups, only a _gap_() method, which most people will not know about.

Change History (2)

comment:1 Changed 4 years ago by tmonteil

  • Description modified (diff)

comment:2 Changed 4 years ago by ncohen

  • Cc ncohen added
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