From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
WikiProject Mathematics (Rated Stub-class, Low-priority)
WikiProject Mathematics
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.
Mathematics rating:
Stub Class
Low Priority
 Field:  Analysis

Is every δ-ring a σ-ring? For a counterexample, search sci.math for "delta-ring" and "sigma-ring" --Keith111 03:15, 11 September 2006 (UTC)

"Consider the family of all finite subsets of some infinite set. This is a delta ring, but not a sigma ring." (from "Questions about delta rings") --Keith111 06:35, 10 October 2006 (UTC)

"A typical example: the sets in R of finite Lebesgue measure." (from "Questions about delta rings") --Keith111 06:57, 10 October 2006 (UTC)

Retrieved from ""
This content was retrieved from Wikipedia :
This page is based on the copyrighted Wikipedia article "Talk:Delta-ring"; it is used under the Creative Commons Attribution-ShareAlike 3.0 Unported License (CC-BY-SA). You may redistribute it, verbatim or modified, providing that you comply with the terms of the CC-BY-SA