Just got confused with what my friend asked (paradox and fake proofs).
1002
Where is the flaw in this "proof" that 1=2? (Derivative of repeated addition)
47697
Russell's paradox: a set cannot contain its own powerset
32950
Fake induction proofs
105303
'Obvious' theorems that are actually false
48030
Axiom of Choice: Where does my argument for proving the axiom of choice fail? Help me understand why this is an axiom, and not a theorem.
15504
In classical logic, why is $(p\Rightarrow q)$ True if $p$ is False and $q$ is True?
90906
unconditional probability, fake coin tossing
13374
Why is "the set of all sets" a paradox, in Layman's terms?
89145
Card doubling paradox
75600
Is Gödel's modified liar an illogical statement?
88135
What are the differences between proofs based on simulation and proofs based on games?
93557
Intuitively, why does (B → S) ≡ (¬B ∨ S)?
146867
Combinatorial Proof Of A Number Theory Theorem--Confusion
40439
about a difficult and weird Probability question
10255
Paradoxes without self-reference?
61347
Understanding a probability paradox
155679
If union of two theories is not consistent one of them implies a sentence which the other implies opposite of it