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Questions about abstract measure and Lebesgue integral theory. Also concerns such properties as measurability of maps and sets.

6 votes

Can the integration of integrable sections of a measurable function of two variables ever re...

EDIT: The following only provides a partial answer, since it is not clear at all that the first property of the question ($f(x, \cdot) \in L^1(Y, \mathcal{T}, \nu)$) is fulfilled for the given example …
PhoemueX's user avatar
  • 734
7 votes
0 answers
473 views

Characterizing the sum $L^1 + L^\infty + L^{1,\infty} + L^{\infty, 1}$ of iterated Lebesgue ...

For the usual Lebesgue spaces $L^p (\mu)$ ($p \in [1,\infty]$) on a ($\sigma$-finite) measure space $(X,\mu)$, it is well-known that one has the characterization $$ L^p (\mu) = \left\{f : X \to \Bbb{ …
PhoemueX's user avatar
  • 734