On the book Probability and Potentials of Paul Mayer page 9 one reads:
Is there an example of a sequence of measurable functions taking values in a incomplete metric space such that the set where $f_n$ converges is not measurable?
2026-04-09 16:34:36.1775752476
The set where $f_n \to f$ is measurable? A question concerning Paul Mayer's Book
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