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Set theory is an esoteric branch of mathematics that deals with the possible axioms of set theory and the impact that these have on the other brances of math that use sets. The vast majority of the times that sets (and the notion of disjoint sets) are used in math, it is not set theory. In fact, I can't recall that any of the big issues of set theory have to do with disjointness anyways, so talk of disjoint sets is, if anything, a clue that you're dealing with some other branch of math. I certainly agree that it was right to mention context, however. — Toby 08:42 Sep 19, 2002 (UTC)
"If {Ai} is a pairwise disjoint collection, then clearly its intersection is empty." This is not true, as the collection might consist of exactly one element. Wasseralm 18:35, 4 March 2007 (UTC)
Someone had added the words "(containing at least two sets)", so I removed the "dubious" label. — Preceding unsigned comment added by 62.220.160.202 ( talk) 16:17, 1 October 2011 (UTC)
This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||
|
Set theory is an esoteric branch of mathematics that deals with the possible axioms of set theory and the impact that these have on the other brances of math that use sets. The vast majority of the times that sets (and the notion of disjoint sets) are used in math, it is not set theory. In fact, I can't recall that any of the big issues of set theory have to do with disjointness anyways, so talk of disjoint sets is, if anything, a clue that you're dealing with some other branch of math. I certainly agree that it was right to mention context, however. — Toby 08:42 Sep 19, 2002 (UTC)
"If {Ai} is a pairwise disjoint collection, then clearly its intersection is empty." This is not true, as the collection might consist of exactly one element. Wasseralm 18:35, 4 March 2007 (UTC)
Someone had added the words "(containing at least two sets)", so I removed the "dubious" label. — Preceding unsigned comment added by 62.220.160.202 ( talk) 16:17, 1 October 2011 (UTC)