How does one prove that proof by contradiction has completely and utterly failed?
75600
Is Gödel's modified liar an illogical statement?
51877
Why is this 'Proof' by induction not valid?
141496
Could someone make the proof into a hinted exercise?
10598
Contrapositive Fitch Proof
111797
Without computers, how can you conjecture the (in)validity of a long convoluted argument in Predicate Logic?
23752
Proving Irrationality
126633
Is a contradiction enough to prove a set equality to $\varnothing$?
2926
The contradiction method used to prove that the square root of a prime is irrational
143248
What approach should I take to establish this logical proof?
64075
Prove that a set of connectives is inadequate
22856
Ways to go from A to B(proof)
143627
Use the Fitch system to prove the tautology (p ∨ ¬p)
98537
What is wrong with the proof?
56682
Real analysis contradiction I cannot get rid of
57215
Stuck on formal proofs. Not sure how to continue
80453
Can you prove anything in philosophy?
32950
Fake induction proofs