Why isn't $\overline{\pi}$ a bijection between sets of cardinality $159$ and $\aleph_0$ respectively?
125613
Free idempotent semigroup with 3 generators
141114
Question about a bijection between $\mathbb R$ and $\mathbb R \cup \{\infty\}$
122947
What is the cardinality of the set of infinite cardinalities?
105594
Fixed point, union of $\aleph_0, \aleph_{\aleph_0},\aleph_{\aleph_{\aleph_0}}\dots$ [see Noah's comment on notation]
62687
Proving Cardinality of Cosets in Abstract Algebra
23705
Does $\pi$ contain all possible number combinations?
107842
Behaviour of ($\overline{a}_n)_{n=1}^{\infty}$ and ($\underline{a}_n)_{n=1}^{\infty}$
101993
The cardinality of a language over a set of variables $V$ with $\#V= κ$
79974
The cardinality of Lebesgue sets
38286
Proving the Cantor Pairing Function Bijective
34710
Cardinality of Irrational Numbers
31391
bijection between $\mathbb{N}$ and $\mathbb{N}\times\mathbb{N}$
151355
Are cardinal numbers well defined? Or could we have something like $\aleph_{1/2}$?
136069
Is there a simple formula for the cardinality of $\{A\subseteq\kappa\mid |A|\leq\lambda\}$ when $\lambda\leq\kappa$?
111954
Computing the cardinality of a combinatorial set
37565
Bijection from finite (closed) segment of real line to whole real line
152518
Proof that the set of all possible curves is of cardinality $\aleph_2$?