Let $1
1. fn→f in measure and
2. supn∈N‖fn‖p<+∞ where ‖fn‖p=(∫|fn|pdμ)1p is the Lp norm.
then ∫fn→∫f in Lp(μ).
I know that convergence in measure implies that there exists a subsequence converges a.e.,but how does it relate to convergence in Lp(μ).
Update:
Thanks for @carmichael561, the conclusion of the question was incorrect. It should be the convergence of integration.
Answer
The two conditions stated are not enough to imply convergence in Lp. Indeed, if X=[0,1] and μ is Lebesgue measure, then the sequence of functions
fn=n1[0,1n2]
converges to zero in measure and is bounded in L2 because
∫X|fn|2dμ=n2⋅1n2=1
for all n. But fn↛0 in L2.
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