Let $(\Omega,\Sigma,\mu)$ be a finite measure space and $(X,\|.\|)$ be a reflexive Banach space.
I did not understand why the sequence $(E_n)$ exists.
An idea please.
2026-03-26 03:09:36.1774494576
Why the sequence $(E_n)$ exists
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Simply take $$ E_n =\{x : \|f(x)\| + \|g(x)\| \leq n \}. $$