#18021: gyration orbits method for AlternatingSignMatrix and add optional
parameter
for gyration method.
-------------------------------------+-------------------------------------
Reporter: egunawan | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.6
Component: combinatorics | Resolution:
Keywords: days64, gyration, | Merged in:
alternating sign matrix | Reviewers: tscrim,
Authors: | jessicapalencia
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/egunawan/ticket/18021 | 52705536f95a497f1573665374c75b69f5d9037f
Dependencies: | Stopgaps:
-------------------------------------+-------------------------------------
Changes (by egunawan):
* status: new => needs_review
* commit: => 52705536f95a497f1573665374c75b69f5d9037f
* branch: => u/egunawan/ticket/18021
* reviewer: => tscrim, jessicapalencia
Old description:
> To see the work in progress, do "git pull trac u/egunawan/gyrationorbit"
>
> In class :class:`AlternatingSignMatrix` (and later FullyPackedLoop):
> * add a method :meth:`obtain_gyration_orbit` for returning the orbit of
> self.
>
> In class :class:`AlternatingSignMatrices`:
> * add a method :meth:`gyration_orbits` for returning the list of orbits
> of alternating sign matrices of order n.
> * add a method :meth:`gyration_orbit_size` for returning the sizes of
> orbits of alternating sign matrices of order n.
>
> For method :meth:`AlternatingSignMatrix.gyration`
> * optional parameter k (default k=1) to indicate how many times to gyrate
> on the ASM
> * add gyration method to :class:`FullyPackedLoop` ?
>
> See Ticket #17988 (implementing FullyPackedLoop class)
>
> We are implementing the code that Travis Scrimshaw gave us.
New description:
(To see the work in progress in between pushing to branch
"u/egunawan/ticket/18021", do "git pull trac u/egunawan/gyrationorbit")
In class :class:`AlternatingSignMatrix` (future: in class
FullyPackedLoop):
* add a method :meth:`obtain_gyration_orbit` for returning the orbit of
self.
In class :class:`AlternatingSignMatrices`:
* add a method :meth:`gyration_orbits` for returning the list of orbits of
alternating sign matrices of order n.
* add a method :meth:`gyration_orbit_size` for returning the sizes of
orbits of alternating sign matrices of order n.
For method :meth:`AlternatingSignMatrix.gyration`
* optional parameter k (default k=1) to indicate how many times to gyrate
on the ASM
(future: call gyration method from :class:`FullyPackedLoop` )
See Ticket #17988 (implementing FullyPackedLoop class)
We are implementing the code that Travis Scrimshaw gave us.
--
Comment:
Reviewers: Please search for [TODO] where I add comments/questions.
----
New commits:
||[http://git.sagemath.org/sage.git/commit/?id=be50f3f3b7bde2def3a93cdef22d53101c95a5f4
be50f3f]||{{{Add methods gyration_orbits and gyration_orbit_sizes to class
AlternatingSignMatrices}}}||
||[http://git.sagemath.org/sage.git/commit/?id=26264f5a0810ebb388897f941aa3bc6176338646
26264f5]||{{{Add obtain_gyration_orbit method to AlternatingSignMatrix
class}}}||
||[http://git.sagemath.org/sage.git/commit/?id=52705536f95a497f1573665374c75b69f5d9037f
5270553]||{{{Add optional parameter count to method
AlternatingSignMatrix.gyration}}}||
--
Ticket URL: <http://trac.sagemath.org/ticket/18021#comment:3>
Sage <http://www.sagemath.org>
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