#18003: Implement Fully Packed Loop class
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       Reporter:  kdilks             |        Owner:
           Type:  enhancement        |       Status:  needs_work
       Priority:  major              |    Milestone:  sage-6.6
      Component:  combinatorics      |   Resolution:
       Keywords:  fpl, ncp, days64,  |    Merged in:
  days65, asm, lp, fully packed      |    Reviewers:  Jessica Striker,
  loop                               |  Travis Scrimshaw
        Authors:  James Campbell,    |  Work issues:  create a parent class
  Vince Knight, Jessica Striker,     |       Commit:
  Kevin Dilks, Emily Gunawan         |  e570958c71ae97e4b50d078c361880fd2c48302b
Report Upstream:  N/A                |     Stopgaps:
         Branch:                     |
  public/ticket/18003                |
   Dependencies:                     |
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Comment (by tscrim):

 Replying to [comment:37 egunawan]:
 > How come AlternatingSignMatrices._element_constructor_ checks if
 asm.parent() is self? Is that also redundant?

 It is also redundant (I might have suggested it, or at least thought it
 was necessary, before Nicolas told me about the fact the coercion
 framework handles that case before `_element_constructor_` even sees it).

--
Ticket URL: <http://trac.sagemath.org/ticket/18003#comment:38>
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