#18003: Implement Fully Packed Loop class
-------------------------------------+-------------------------------------
       Reporter:  kdilks             |        Owner:
           Type:  enhancement        |       Status:  needs_review
       Priority:  major              |    Milestone:  sage-6.6
      Component:  combinatorics      |   Resolution:
       Keywords:  fpl, ncp, days64,  |    Merged in:
  asm, lp, fully packed loop         |    Reviewers:  Jessica Striker,
        Authors:  James Campbell,    |  Travis Scrimshaw
  Vince Knight, Jessica Striker,     |  Work issues:
  Kevin Dilks, Emily Gunawan         |       Commit:
Report Upstream:  N/A                |  0cbd4f6d2306e42b2e801c05ca81f2699df35a2d
         Branch:                     |     Stopgaps:
  public/ticket/18003                |
   Dependencies:                     |
-------------------------------------+-------------------------------------
Changes (by {'newvalue': u'James Campbell, Vince Knight, Jessica Striker, Kevin 
Dilks, Emily Gunawan', 'oldvalue': u'jcampbell'}):

 * author:  jcampbell =>
     James Campbell, Vince Knight, Jessica Striker, Kevin Dilks, Emily
     Gunawan


Old description:

> Create class FullyPackedLoop class and fully_packed_loop.py.
> Add methods for ascii/graphical representation by modifying corresponding
> code for six vertex model.
> Add method to_alternating_sign_matrix.
> Add method link_pattern to extract link pattern/ non-crossing partition.
>
> To access the latest code in progress, do
> ``git pull trac public/ticket/18003`` on top of sage6.6beta6
>
> (previously u/jcampbell/lp also on top of sage6.6beta6)
>
> The duplicate ticket #17988 has been labeled duplicate/invalid

New description:

 Create the `FullyPackedLoop` class which does the following:

 - Add methods for ascii/graphical representation by modifying
 corresponding code for six vertex model.
 - Add method `to_alternating_sign_matrix`.
 - Add method `link_pattern` to extract link pattern/ non-crossing
 partition.

--

Comment:

 On my todo list.

--
Ticket URL: <http://trac.sagemath.org/ticket/18003#comment:15>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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