Construction of Borel set with given Lebesgue density.
42358
Find a Borel subset satisfying the condition
82236
Extension of the Lebesgue measurable sets
89719
Probability of selecting a non-measurable set
101028
Irrational numbers and Borel Sets
64487
Continuous function and dense set
98580
Lebesgue-measurable sets requiring the Axiom of Choice to construct
131037
Is every compact subset of $\Bbb{R}$ the support of some Borel measure?
63538
Impossibility of constructing a continuum-size linearly independent set in $\Bbb R$
83665
Prove a assertion concerning Lebesgue space
158018
Everywhere Super Dense Subset of $\mathbb{R}$
132382
Showing a set is nowhere dense in $C([0,1])$
90826
Constructing a subset not in $\mathcal{B}(\mathbb{R})$ explicitly
24749
Monotone functions and Borel sets
61122
A continuous mapping is determined by its values on a dense set
51995
Probability of $\limsup$ of a sequence of sets (Borel-Cantelli lemma)
114929
Differences between the Borel measure and Lebesgue measure
136795
A non-measurable set of given outer measure