Why is this argument for the reals being countable wrong?
2269
Proof that the real numbers are countable: Help with why this is wrong
158842
What is wrong with this bijection from all naturals to reals between 0 and 1?
22232
Proving that cardinality of the reals = cardinality of $[0,1]$
52682
Is the power set of the natural numbers countable?
15438
do all uncountable sets have same cardinality as real numbers?
139247
Real Analysis - Prove a set is countable
19777
Defining "Countably Infinite"
34998
How to prove that $\mathbb{Q}$ ( the rationals) is a countable set
80019
$\varepsilon$-number countability without choice
13620
$\omega_2$ is a not countable union of countable sets without AC
1027
Why is this true? $(\exists x)(P(x) \Rightarrow (\forall y) P(y))$
76240
How is $\epsilon_0$ countable?
99656
Prove that the set of all algebraic numbers is countable
133266
If $(X, \mathcal{T})$ has a countable subbasis, then it has a countable basis
100333
Show A is countable infinity
99599
Uncountable and countable
71922
Prove Uncountable set minus a countable set is uncountable