I got stuck on a problem on Folland's book, here is the problem:
suppose is a Radon measure on such that for all , and is a Borel set in X such that . Then show that any such that , there is a Borel set such that .
thank you all!
I got stuck on a problem on Folland's book, here is the problem:
suppose is a Radon measure on such that for all , and is a Borel set in X such that . Then show that any such that , there is a Borel set such that .
thank you all!