Σ-algebra: Difference between revisions

Revision as of 02:53, 22 November 2001

Revision as of 01:52, 17 January 2002

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This leads to the most important example: the [[Borel]] sigma algebra in any [[topological space]] is the sigma algebra generated by the open sets (or, equivalently, by the closed sets.) It is important to note that this sigma algebra is not, in general, the power set. For a non-trivial example, see the [[vitali set]].

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