why the Vitali set has size $2^{\aleph_0}$?
14972
Cardinality of Vitali sets: countably or uncountably infinite?
79974
The cardinality of Lebesgue sets
120010
Show that $\aleph_{\alpha}^{\aleph_{1}} = \aleph_{\alpha}^{\aleph_{0}}\cdot 2^{\aleph_1}$
150605
Existence of a regular uncountable $\aleph_{\alpha}$ without $\mathsf{AC}$
1307
Infimum and supremum of the empty set
5022
Can a set containing $0$ be purely imaginary?
74498
Smallest dense subset of $\mathbb{R}$
95947
Cantor set + Cantor set =$[0,2]$
142631
Show that A has the same cardinality as $A\setminus\{x,y,z\}$
88598
Property of $\{0^n, 1^n, \ldots\}$
35043
Cardinality of a set A is strictly less than the cardinality of the power set of A
153107
Does every connected component of $\{z : |P(z)|<1 \}$ contain a zero?
36139
Size of a natural transformation and the Yoneda Lemma
80202
Why is $[0, 1] \cap \mathbb{Q}$ not compact in $\mathbb{Q}$?
54791
Is it true or false that $\lvert P([0, 1]) \setminus P((0, 1)) \rvert > \lvert P(\mathbb{N}) \rvert$
154837
mapping properties of $(1−z)^i$
10902
Showing that $ \prod\limits_{i=0}^{n} {n \choose i}\leq(\frac{2^n-2}{n-1})^{n-1} $