This article is rated Stub-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects:

Mathematics Low‑priority This article is within the scope of WikiProject Mathematics, a collaborative effort to improve the coverage of mathematics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.MathematicsWikipedia:WikiProject MathematicsTemplate:WikiProject Mathematicsmathematics articles Low This article has been rated as Low-priority on the project's priority scale.

I removed the material because

1. the definition in the source has local scope
2. the term "sparse collection" is nonstandard
3. the observation applies to arbitrary collections of mutually exclusive events

Yecril ( talk) 13:38, 8 August 2018 (UTC) reply

I am guessing ${\displaystyle \partial B}$ in this article denotes the boundary set, but I do not know for sure. -- Drizzd ( talk) 07:16, 14 July 2011 (UTC) reply

Yes it is. linas ( talk) 16:04, 29 July 2012 (UTC) reply

Article needs counter-example: a Borel set that is not a continuity set... In particular, the article on convergence of measures states that a sequence of measures P_n converges weakly when

lim P_n(A) = P(A) for all continuity sets A of measure P.

while, removing the word 'continuity' converts the above defintion into strong convergence. linas ( talk) 16:15, 29 July 2012 (UTC) reply