Talk:Hypergraph

From Wikipedia, the free encyclopedia

Mathematics Portal This article is within the scope of WikiProject Mathematics, which collaborates on articles related to mathematics.
Mathematics rating:	Start Class	High Priority	Field: Discrete mathematics
Please update this rating as the article progresses, or if the rating is inaccurate. Click to show/hide comments. Please add to or update the comments to suggest improvements to the article. Needs material on history, motivation, applications, current state of research, and relations with graphs and graph theory. Tompw (talk) 15:24, 4 January 2007 (UTC)

[edit] Notation

This article needs the notation unifying between what I've just added and the rest. Rich Farmbrough 20:54, 26 August 2005 (UTC)

[edit] Set of Subsets

Someone not logged in just changed S(X) (as the set of subsets of X) to P(X). I'll consider it as a vandalism (specially because he or she didn't log in), but there's a reason for the exchange? --FernandoAires 11:54, 22 August 2006 (UTC)

[edit] Image

I would just like to point out that the graph depicted on the page is not really a hypergraph. Since node 7 is not a part of any edge, but is in the nodeset of the graph, taking the dual will lead to an empty edge, not allowed according to the definition. I think also that Berge stated in his book that the superunion of the edges should be equal to the nodeset. /Jonatan —Preceding unsigned comment added by 130.243.173.106 (talk) 17:52, August 30, 2007 (UTC)