Problem with understanding Cantor's diagonal argument
60722
Why does Cantor's diagonal argument not work for rational numbers?
129693
An interesting problem with "decomposing" natural numbers.
97547
Is it possible to get a diagonal subset symbol?
135316
A basic question on diagonalizability of a matrix
132701
Contradicting Fubini's theorem
44522
Subsets of the reals when the Continuum Hypothesis is assumed false
28155
Two questions about diagonalization
131992
A problem on continuous functions
4946
Non-existence of irrational numbers?
151686
A proof that the Cantor set is Perfect
151215
Paradox of General Comprehension in Set Theory, other than Russell's Paradox
3682
If $V = \text{null}(\textsf{T}-\lambda\textsf{I}) \oplus \text{range}(\textsf{T}-\lambda\textsf{I})$, then prove that $\textsf{T}$ is diagonalizable
48278
Inequality about infinite cardinals
83778
An incorrect proof by exhaustion
26161
The statement "$\alpha$ is a cardinal" is not absolute
54761
Inverting the Cantor pairing function
272
Cantor Sets/nonempty/cardinality