Least $n \in \mathbb{N}$ such that $2^{|n|} = \aleph_0$?
69838
Does a countably infinite power set exist?
43598
Do $\omega^\omega=2^{\aleph_0}=\aleph_1$?
48081
Prove that for all $n \in \mathbb{N}$: $2^{n-1}(a^n + b^n) \ge (a + b)^n$
26011
To show that $2$ | $x^{2n} - x^n$, $n \in \mathbb{Z^+}$ is the following adequate?
143357
Comparing $2^n$ to $n!$
150605
Existence of a regular uncountable $\aleph_{\alpha}$ without $\mathsf{AC}$
72420
Is $\mathbb{N}$ impossible to pin down?
43048
When is $2^n \pm 1$ a perfect power
141529
Proving existence of a minimum
122932
When $(\mathbb{Q}(\zeta_n) : \mathbb{Q}) = 2$?
27859
least common multiple of $\{1,2,...,n\}$ is bigger than $2^{n-1}$
66358
Prove by mathematical induction that $2n ≤ 2^n$, for all integer $n≥1$?
84491
Finding the smallest positive integer $n$ such that $S_n$ contains an element of order 60.
6427
how many infinite cardinals are smaller than $\aleph$?
59459
Binary sequences and ${2}^{\mathbb{N}}$ have the same cardinality
30519
"Real" cardinality, say, $\aleph_\pi$?
1148
Curious limit of a sequence used to prove Etemadi's SLLN