Nonmeasurable set and G-delta set
93684
Show that $\mu (E \setminus A)>0$ if $A$ is a nonmeasurable subset of $X$ and $A \subseteq E$, $E$ is measurable.
52104
A pseudometric on the space of the measurable functions is complete
156176
Lebesgue measurability of nearly identical sets
52388
The equivalence of open-set definition of continuous mappings to the $\epsilon-\delta$ definition
83204
Is every $G_\delta$ set the set of continuity points of some function $f$?
109570
How to show that the set of points of continuity is a $G_{\delta}$
60032
If the measure of union = sum of outer measures, then the sets are measurable
64486
Show that for non-negative measurable functions $f,g$ with $fg \geq 1$ the inequality $(\int f^p)(\int g^p) \geq 1$ holds.
131251
Picking a $\delta$ for a convenient $\varepsilon$?
19632
Intuition behind the definition of a measurable set
63309
How to find a measurable but not integrable function or a positive integrable function?
43462
Disprove $\mathcal{P}(A\Delta B) \setminus \{\emptyset\} = \mathcal{P}(A) \Delta\mathcal{P}(B) $. Is my proof good?
69499
Let $A\subset\mathbb{R}$ a measurable and bounded set. Show that exists for each $0\alpha$.
69857
Is the set $A=\{x\in E|\lim_{n \to\infty} f_n(x)\ exists\ (finitely)\}$ measurable?
32347
Limit of a decreasing sequence of measurable sets.
21068
Is composition of measurable functions measurable?
97557
supremum of uncountable families of Borel measurable functions