Proposition 16

Tag 08PV, permanent. Cite it as [Bourbaki, Tag 08PV].

If $A$ and $B$ are two subsets of $X$ such that $A \subset B$ , then $\mu^*(A) \leq \mu^*(B)$ .

Bourbaki puts the proof directly after the statement, so what is above is the statement and its proof together.

Cited by

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