A way to put all real numbers in a set with a countably infinite size
2269
Proof that the real numbers are countable: Help with why this is wrong
99064
Uncountable set with exactly one limit point
19777
Defining "Countably Infinite"
14972
Cardinality of Vitali sets: countably or uncountably infinite?
7733
If A is infinite, does there have to exist a subset of A that is equivalent to A?
36281
A set is infinite iff it is equivalent to a proper subset of itself
153969
The "elements" of a real number
130149
Computablility of a real number
324
Show uncountable set of real numbers has a point of accumulation
35692
The set of all finite subsets of the natural numbers is countable
158671
Cardinality of a set that consists of all existing cardinalities
68230
The cardinality of a countable union of sets with less than continuum cardinality
42095
Existence in ZF of a set with countable power set
44974
Infinite set and countable subsets
70543
Does an uncountable discrete subspace of the reals exist?
52429
Explicit countable elementary extension of $\mathbb{N}$
70196
Is there any well-ordered uncountable set of real numbers under the original ordering?