Similar to ニュートンの定理

Linear independence

Diagonal lemma

Thales's theorem

Monotone convergence theorem

Ceva's theorem

Intermediate value theorem

Parallelogram law

Taylor's theorem

Dirichlet integral

Thébault's theorem

De Moivre's formula

Sz.-Nagy's dilation theorem

Seven circles theorem

Napkin ring problem

Lazy caterer's sequence

Proof that e is irrational

Hardy–Littlewood inequality

Pappus's area theorem

Pappus's hexagon theorem

Banach–Alaoglu theorem

Banach fixed-point theorem

Tangent half-angle substitution

Pythagorean theorem

Nyquist–Shannon sampling theorem

Fáry's theorem

Fatou's lemma

Feuerbach's theorem

Bézout's identity