Definition 21.3.2 (Radon Measure).label Let $X$ be a LCH space and $\mu$ be a Borel signed/vector measure on $X$, then $\mu$ is Radon if $|\mu|$ is Radon.
Definition 21.3.2 (Radon Measure).label Let $X$ be a LCH space and $\mu$ be a Borel signed/vector measure on $X$, then $\mu$ is Radon if $|\mu|$ is Radon.