Wednesday, June 27, 2018

real analysis - Infinity norm related to $L_p(X)$ norm on finite measure space $X$.

Let $(X, \cal M, \mu)$ be a measure space with $\mu(X)<\infty$. Why
\begin{align}
\lim_{p\to\infty}\|f\|_p=\|f\|_\infty
\end{align}
for all $f\in L_\infty$?

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