Thursday, 31 October 2019

functional analysis - fntof in L1 implies sqrtfntosqrtf in L2?




Suppose that {fn} is a sequence of measurable functions converging to f in L1(Rn). Is it true that fn converges to f in L2(Rn)?



If this is true then I would need to show that fnff.



Could someone help.


Answer



(fnf)2|fnf|


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