Why the proof by contradiction is a valid proof in Mathematics?
43700
Are proofs by contradiction really logical?
98537
What is wrong with the proof?
50268
Why is mathematical induction a valid proof technique?
83714
$A \in B$ vs. $A \subset B$ for proofs
39189
Argue by contradiction to show that there is no surjection...
100399
A doubt with a part of a certain proof.
148790
Basic question about proofs with the goal $\exists x P(x)$
147874
Why does the existence of independent statements not prove consistency?
55357
Why does drawing $\square$ mean the end of a proof?
95851
Validity of an argument with a contradictory conclusion
61671
Discrete Math: Writing Proofs
32325
Can there be a valid argument which has a tautology as a conclusion?
17073
Using proof by contradiction vs proof of the contrapositive
82159
How does a non-mathematician go about publishing a proof in a way that ensures it to be up to the mathematical community's standards?
4182
What are some classic fallacious proofs?
141814
Proofs using theorems instead of axioms
32524
Flawed proof that all positive integers are equal