Article contents
On the σ-class generated by open balls
Published online by Cambridge University Press: 01 July 1999
Abstract
We show that in the finite dimensional space ℝd provided with a metric induced by a norm, the collection of Borel sets is the smallest collection containing the open balls and closed under complements and countable disjoint unions.
- Type
- Research Article
- Information
- Mathematical Proceedings of the Cambridge Philosophical Society , Volume 127 , Issue 1 , July 1999 , pp. 99 - 108
- Copyright
- The Cambridge Philosophical Society 1999
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