measure theorem

https://terrytao.files.wordpress.com/2011/01/measure-book1.pdf

https://www.cmi.ac.in/~prateek/measure_theory/

https://ocw.mit.edu/courses/mathematics/18-125-measure-and-integration-fall-2003/lecture-notes/

https://www.youtube.com/watch?v=xZ69KEg7ccU

The Bright Side Of Mathematics
https://www.youtube.com/watch?v=11heoNVavvM