#16622: Deprecate Hypergraph in favor of IncidenceStructure
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   Reporter:  ncohen                 |            Owner:
       Type:  defect                 |           Status:  new
   Priority:  major                  |        Milestone:  sage-6.3
  Component:  combinatorial designs  |         Keywords:
  Merged in:                         |          Authors:
  Reviewers:                         |  Report Upstream:  N/A
Work issues:                         |           Branch:
     Commit:                         |     Dependencies:
   Stopgaps:                         |
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 a "Hypergraph" class was introduced in #14712, but there also exists
 `IncidenceStructure` in `sage/combinat/designs` as well as `set_system` in
 `sage/matroids`.

 We should really start to all work together on the same class, so for now
 let's deprecate Hypergraph in favor of `IncidenceStructure`.

 1) The only interesting thing that `Hypergraph` can do is plot a
 hypergraph, and `IncidenceStructure` has no such feature.

 2) Right now `set_system` claims to be only for internal use, so we cannot
 use it right now as a replacement right now.

 Nathann

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Ticket URL: <http://trac.sagemath.org/ticket/16622>
Sage <http://www.sagemath.org>
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