How can I disprove that?
95057
Possible fake proof of $1= -1$
9819
prove/disprove Big-Oh
127733
How to prove De Morgan’s laws without using contradictions
40048
Finding the fallacy in this broken proof
127642
Is "incorrect facts" a contradiction in terms?
2251
Can someone give me a hint on how to prove this?
101877
Assumed True until proven False. The Curious Case of the Vacuous Truth
109858
How could a statement be true without proof?
123166
Check the statements about irreducibility
118858
Is there any way to negate a Predicate?
100399
A doubt with a part of a certain proof.
113957
Why is it possible to conclude everything from a false statement?
122657
Idiom Request: you know how to convince me
48761
How can know if a proof technique can actually prove something? Specifically, induction
129697
Prove that a limit doesn't exist
111797
Without computers, how can you conjecture the (in)validity of a long convoluted argument in Predicate Logic?
98537
What is wrong with the proof?