Why are some nouns countable and others uncountable?
38711
When can uncountable nouns be countable?
75019
Infinite Cartesian product of countable sets is uncountable
2269
Proof that the real numbers are countable: Help with why this is wrong
98752
Many more vs much more / many fewer vs much fewer
108748
Why there are real numbers with infinite digits, but no such natural numbers (or another reason why real numbers are uncountable)
142144
Countable or uncountable; family of disjoint triangles?
24253
"occur" vs "occurs" with a singular collective noun
3636
Are any two uncountable sets similar to each other?
3645
Why Are the Reals Uncountable?
60678
Does 'A countable infinite Cartesian product of countable sets is not necessarily countable' violate induction principle?
155168
Is the collection of finite subsets of $\mathbb{Z}$ countable?
1318
What is wrong with this proof that the power set of the natural numbers is countable?
76809
"Some" and "Any"; countables and uncountable
122506
Relation on countable sets
80019
$\varepsilon$-number countability without choice
119886
The cantor set is uncountable
86480
Is the set of all finite sequences of letters of Latin alphabet countable/uncountable? How to prove either?