What is the hausdorff dimension of the set of all transcendental numbers?
104234
What is the Hausdorff dimension of the set of irrationals on $\mathbb R^1$
11069
Deciding whether $2^{\sqrt2}$ is irrational/transcendental
128894
About compactness and completeness of set $X = \mathbb{R}$ with the metric $d(x, y) = \frac{|x-y|}{1+|x-y|}$
76434
What is the measure of the set of numbers in $[0,1]$ whose decimal expansions do not contain $5$?
133938
Connectedness of the Hausdorff distance.
122663
Proving $T$ and $U$ are equal if I know $(X,T)$ and $(X,U)$ are hausdorff and compact
77129
Density of irrationals
78915
Density of the set $S=\{m/2^n| n\in\mathbb{N}, m\in\mathbb{Z}\}$ on $\mathbb{R}$?
16553
Cardinality of the set of all total orders on $\Bbb{N}$
30796
Is the set of irrationals separable as a subspace of the real line?
63036
Proving that $\dim(\mathrm{span}({I_n,A,A^2,...})) \leq n$
152518
Proof that the set of all possible curves is of cardinality $\aleph_2$?
3101
Meaning of a set in the exponent
93389
Uncountable sets of Hausdorff dimension zero
10541
How to prove Mandelbrot set is simply connected?
147331
Compactness and Hausdorffness
100560
$X$ compact Hausdorff space, characterize the maximal ideals of $C(X)$