#13365: Add Semidirect Product Method for Permutation Groups
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Reporter: khalasz | Owner: joyner
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-5.4
Component: group theory | Resolution:
Keywords: groups semidirect product GAP | Work issues:
Report Upstream: N/A | Reviewers: Benjamin
Jones
Authors: Kevin Halasz | Merged in:
Dependencies: | Stopgaps:
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Old description:
> Adds a semidirect product method.
> A generic, top-level method is added to categories/groups.py, which
> simply raises a `NotImplementedError`. This is then overridden in
> permgroup.py. This method wraps GAP's `SemidirectProduct` function. It is
> implemented so that the calling group is the group acting on an inputted
> normal subgroup.
>
> '''Apply'''
> 1. [attachment:13365_semidirectproduct-v2.2.patch]
> 2. [attachment:trac_13365_reviewer.patch]
New description:
Adds a semidirect product method.
A generic, top-level method is added to categories/groups.py, which simply
raises a `NotImplementedError`. This is then overridden in permgroup.py.
This method wraps GAP's `SemidirectProduct` function. It is implemented so
that the calling group is the group acting on an inputted normal subgroup.
'''Apply'''
1. [attachment:13365_semidirectproduct-v2.2.patch]
2. [attachment:trac_13365_reviewer-v2.patch]
--
Comment (by rbeezer):
Added a commit message to the reviewer patch and fixed a spelling mistake.
Maybe it was the same mistake KDC found, but how would we know?
Kevin - three of us have looked at the reviewer patch now. But you have
the final say. If it looks OK to you, then you can say so here, and flip
the ticket to positive review, or wait for Ben to do it. (Do not add me
as a reviewer or anything, just doing a public service on the reviewer
patch).
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13365#comment:22>
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