#15060: The empty graph once again
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       Reporter:  darij                          |        Owner:
           Type:  defect                         |       Status:  new
       Priority:  major                          |    Milestone:  sage-5.12
      Component:  combinatorics                  |   Resolution:
       Keywords:  graphs, border cases, bitset,  |    Merged in:
  memleak                                        |    Reviewers:
        Authors:                                 |  Work issues:
Report Upstream:  N/A                            |       Commit:
         Branch:                                 |     Stopgaps:
   Dependencies:                                 |
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Comment (by ncohen):

 Ahahah. I mostly agree with the first comment of
 http://math.stackexchange.com/questions/50551/is-the-empty-graph-connected
 : "This is not mathematics, this is theology".

 Honestly, why do you insist on putting those weird definitions in Sage ?
 Now you can make a disconnected graph connected by adding an isolated
 vertex to it ? `:-P`
 What's the point ? It's unnatural. It just confuses people. It will just
 create bugs. Why can't we just say that a graph is connected if any two
 vertices are linked by a path and be satisfied with that ?

--
Ticket URL: <http://trac.sagemath.org/ticket/15060#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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