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jinsing
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Homework Statement
Suppose S is a set with finite measure, f>=0 on S and f is Lebesgue measurable. For each n in N define E_n = {x \in S | f(x) > n} Prove that \lim_{n \rightarrow \infty} \int_{E_n} f = 0
Homework Equations
Definition of Lebesgue measurability for unbounded functions
The Attempt at a Solution
Honestly, I'm not entirely sure where to even begin with this one. Would I want to somehow incorporate the epsilon definition of limit? Or should I define f_n(x) = f(x) if f(x) <= n and n if f(x) > n, and show that limit will equal 0? Or none of these ideas? Just a little push in the right direction would be really helpful.
Thanks!
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