- #1
pivoxa15
- 2,255
- 1
Homework Statement
A, B in a sigma algebra
Prove
m(A)+m(B)=m(AuB)+m(AnB)
m denotes the measure.
The Attempt at a Solution
Don't see how to do it.
Somehow we are dealing with each individual set and taking the measure on them. Then finding what they equate to.