User contributions for Retrace
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17 May 2014
- 19:1719:17, 17 May 2014 diff hist +5 m Sigma-Ring is Closed under Countable Intersections No edit summary
- 19:1519:15, 17 May 2014 diff hist +1,082 Sigma-Ring is Closed under Countable Intersections Added proof; modified from analogous proof for sigma-algebras. I'm pretty sure the proof is correct, but I'm not sure if it meets ProofWiki's style guidelines (I tried).
- 18:3818:38, 17 May 2014 diff hist +11 m Sigma-Algebra Closed under Countable Intersection No edit summary
24 May 2013
- 19:4619:46, 24 May 2013 diff hist −1 m Division Theorem/Proof 1 →Negative $a$: Changed minus sign to plus sign.