Similar to ケイシーの定理

6

7

8

9

Proof that 22/7 exceeds π

Proof that π is irrational

Euler's formula

Interesting number paradox

Open mapping theorem (complex analysis)

Rank–nullity theorem

Gauss's lemma (number theory)

Carathéodory's theorem (convex hull)

Geometric mean theorem

Leibniz formula for determinants

Locally connected space

Coupon collector's problem

Kőnig's lemma

Primitive Pythagorean triple

Kempner series

Cauchy's mean value theorem

Mean value theorem (divided differences)

Schiffler point

Shannon's source coding theorem

Noisy-channel coding theorem

Jordan's lemma

Sylvester–Gallai theorem

Law of sines