Does exist a singular cardinal $\lambda$ which $\kappa < \lambda \implies 2^{\kappa}<\lambda?$
116146
A cardinal $\kappa$ such that $2^{\lambda}<\kappa$ for all $\lambda<\kappa$ is regular?
30519
"Real" cardinality, say, $\aleph_\pi$?
117533
$|A-\lambda I|$ and $|\lambda I-A|$
36631
Is $[0,1] \cap \Bbb Q$ a compact subset of $\Bbb Q$?
136094
$G_\delta$ singletons in compact Hausdorff and first countability
106325
Question about Cardinality
15438
do all uncountable sets have same cardinality as real numbers?
14972
Cardinality of Vitali sets: countably or uncountably infinite?
109054
Given an infinite set of cardinality $X$, is there a chain in $\mathcal P(X)$ of the same cardinalty of $\mathcal P(X)$?
97583
Let $\alpha, \beta, \gamma$ be cardinals, $\beta \leq \gamma$, prove $\alpha ^{\beta}\le \alpha ^{\gamma}$
69838
Does a countably infinite power set exist?
20085
What's the cardinality of all sequences with coefficients in an infinite set?
127200
Are there fields and ordered fields of every infinite cardinality?
108922
Cardinality and infinite sets: naturals, integers, rationals, bijections
135694
Proving $\kappa^{\lambda} = |\{X: X \subseteq \kappa, |X|=\lambda\}|$
92639
Prove that the family of open sets in $\mathbb{R}$ has cardinality equal to $2^{\aleph_0}$
45218
Comparing the two cardinals $\aleph_0^{\aleph_0}$ and $2^{\aleph_0}$