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6:52 PM
A new tag was created by Richard Clare.
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Q: If $\{X_\alpha\}$ is a collection of mutually disjoint meas. subsets of $\mathbb{R} \rightarrow$ then at most countable of them has positive measure.

Richard ClareLet $\{X_\alpha\}_{\alpha \in I}$ be a collection of mutually disjoint measurable subsets of $\mathbb{R}. Show that at most countable of them has positive measure. I want to see if my proof is correct. Proof: Let $\{X_\alpha\}_{\alpha \in \Gamma \subset I}$ be the subcollection such that $m(X_...

 
@MartinSleziak I am not an expert on this topic, but seems sufficient to me.
I even wonder if (which is for advanced set theory topics) is appropriate there.
 

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