Ring of sets/Definition
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< Ring of sets
Revision as of 17:21, 18 August 2016 by Alec (Talk | contribs) (Moved definition to sub-page. Minor style edits.)
Definition
A Ring of sets is a non-empty class R[1] of sets such that:
- ∀A∈R∀B∈R[A∪B∈R]
- ∀A∈R∀B∈R[A−B∈R]
References
- Jump up ↑ Page 19 -Measure Theory - Paul R. Halmos
