Uncountable collection
60424
Uncountable family of uncountable compact subsets of $\mathbb{R}$
19924
Uncountable ordinals without power set axiom
2403
Can a countable set contain uncountably many infinite subsets such that the intersection of any two such distinct subsets is finite?
154474
Image of countable and uncountable sets
146055
Proving a set of functions is uncountable
127100
Countable or uncountable set 8 signs
146006
Uncountable $\sigma$-algebra
19777
Defining "Countably Infinite"
324
Show uncountable set of real numbers has a point of accumulation
76809
"Some" and "Any"; countables and uncountable
112910
Is the set of real numbers really uncountably infinite?
68230
The cardinality of a countable union of sets with less than continuum cardinality
50602
Does uncountable summation, with a finite sum, ever occur in mathematics?
44974
Infinite set and countable subsets
39351
$f(X)$ is uncountable and hence $X$ is uncountable.
4213
The set that only contains itself
14235
count vs length vs size in a collection