Lindelöf $\iff$ $\frac1T\int_0^T|\zeta(\tfrac12+it)|^{2k}dt=O(T^{\varepsilon})$ for all $k$

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Lindelöf $\iff$ $\frac1T\int_0^T|\zeta(\tfrac12+it)|^{2k}dt=O(T^{\varepsilon})$ for all $k$ · Prove2Me