Talk:Union (set theory)

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Mathematics rating:	Start Class	Mid Priority	Field: Foundations, logic, and set theory
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 references Geometry guy 22:28, 17 June 2007 (UTC)

[edit] Move issues

Because this page was moved without using the "Move this page" feature and the edit history was later recombined, this history may look odd near 2002 April 6 and 2003 February 7. However, every version saved is in the history at its correct date. -- Toby 00:27 Mar 5, 2003 (UTC)

[edit] Definite problem

There is a very clear problem with the picture on this page and/or the picture on the intersection page. If you pay attention they are the same picture. Being as they are opposites, I find it unlikely that the middle section of a Venn Diagram of A and B is both AuB and AnB LFStokols 03:46, 9 March 2007 (UTC) LFStokols

So far as it seems, this issue has been resolved. J O R D A N ^[talk ] 20:45, 13 June 2008 (UTC)

[edit] Infinitary intersection

The article mentions the infinitary intersection; but I think there must be a warning that the "infinitary intersection" of no sets is not defined (unless we accept that it is the class of all sets): . Contrast this with the infinitary union, that is defined for all sets. Albmont (talk) 13:19, 15 December 2008 (UTC)