#16553: Clean IncidenceStructure
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       Reporter:  vdelecroix         |        Owner:
           Type:  enhancement        |       Status:  needs_review
       Priority:  major              |    Milestone:  sage-6.3
      Component:  combinatorial      |   Resolution:
  designs                            |    Merged in:
       Keywords:                     |    Reviewers:
        Authors:  Nathann Cohen,     |  Work issues:
  Vincent Delecroix                  |       Commit:
Report Upstream:  N/A                |  b8012e72038dffa51cc60b0af19283881dec2860
         Branch:  public/16553v2     |     Stopgaps:
   Dependencies:                     |
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Description changed by ncohen:

Old description:

> In #16552 we discovered that `IncidenceStructure` is not adapted to deal
> with projective spaces. The class should be able:
>  - to deal with other ground sets than integers (but with a fixed
> bijection `points <-> {0, ..., v-1}`)
>  - to be a base class for inheritance to create other designs (like `GDD`
> or specialized one such as `DesarguesianProjectivePlane`)
>  - ... (maybe more)
>
> see also: #16534

New description:

 In #16552 we discovered that `IncidenceStructure` is not adapted to deal
 with projective spaces. The class should be able:
  - to be a base class for inheritance to create other designs (like `GDD`
 or specialized one such as `DesarguesianProjectivePlane`)
  - ... (maybe more)

 see also: #16534

--

--
Ticket URL: <http://trac.sagemath.org/ticket/16553#comment:87>
Sage <http://www.sagemath.org>
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