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Banach spaces, function spaces, real functions, integral transforms, theory of distributions, measure theory.

5 votes
1 answer
243 views

Complemented subspaces of ultrapowers

It's a famous result of Maurey that a Banach space $E$ is finitely representable in $X$ if and only if it is a subspace of some ultrapower of $X$. Is there an analogous result for complemented subspac …
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