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A null graph is not a valid tree #72

Merged
merged 2 commits into from Sep 11, 2013
Merged

A null graph is not a valid tree #72

merged 2 commits into from Sep 11, 2013

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clue
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@clue clue commented Sep 11, 2013

  • Make sure a null Graph (a Graph with no Vertices and thus no Edges) is not a valid tree (because it's not connected) (BC break!)
  • Documentation
  • Changelog

See also http://mathoverflow.net/questions/120536/is-the-empty-graph-a-tree

clue added a commit that referenced this pull request Sep 11, 2013
@clue
Merge pull request #72 from clue/improve-tree-null
4d413c7 
A null graph is not a valid tree
@clue clue merged commit 4d413c7 into master Sep 11, 2013
@clue clue deleted the improve-tree-null branch September 11, 2013 10:25
@clue clue mentioned this pull request Sep 11, 2013
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