Similar to チェバの定理

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Proof that 22/7 exceeds π

Proof that π is irrational

Interesting number paradox

Open mapping theorem (complex analysis)

Rank–nullity theorem

Gauss's lemma (number theory)

Leibniz formula for determinants

Locally connected space

Coupon collector's problem

Kőnig's lemma

Tree of primitive Pythagorean triples

Mean value theorem (divided differences)

Shannon's source coding theorem

Noisy-channel coding theorem

Jordan's lemma

Analyticity of holomorphic functions

Linear independence

Diagonal lemma

Monotone convergence theorem

Intermediate value theorem

Taylor's theorem