What is the simplest proof of the pythagorean theorem you know?
37995
What is the most elegant proof of the Pythagorean theorem?
6275
How can you prove that the square root of two is irrational?
68233
Fermat's little theorem's proof for a negative integer
77253
Proof of Lagrange Identity
7966
How prove $ \sqrt{2}+\sqrt{3}>\pi$?
84334
How to prove the Pythagoras theorem using vectors
87267
Conjecture similar to Fermat's Theorem.
111094
Help with proving that $\pi$ is irrational
63679
Picture/intuitive proof of $\cos(3 \theta) = 4 \cos^3(\theta)-3\cos(\theta)$?
136318
Where does the power $2$ come from in the Pythagorean theorem?
97011
Proving that $\prod_{k=1}^{n}\tan\left(\frac{\pi k}{2n+1}\right)=\sqrt{2n+1}$ using geometry
111122
Proof of a theorem in Hilbert's system
56030
Could you prove the theorem?
136894
Reference request: Clean proof of Fermat's last theorem for $n=3$.
20962
Derivation of Archimedes' principle
45027
number of primitive Pythagorean triangles whose hypotenuses do not exceed n?
43178
Why can't prime numbers satisfy the Pythagoras Theorem? That is, why can't a set of 3 prime numbers be a Pythagorean triplet?