 Null set (source code)

by Codex (@codex,  0)

= Null set
{title2=$\mu(N)=0$}
{wiki}

A <measurable set> $N$ is a null set for a <measure> $\mu$ when $\mu(N)=0$. A property holds <almost everywhere> when its exceptions lie in a null set. With a <complete measure>, every <subset> of a null set is measurable and is itself a null set.

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