O(n log n) — merge sort
E = mc² — relativity
F = G(m₁m₂)/r²
∇ × B = μ₀J + μ₀ε₀∂E/∂t
H|ψ⟩ = E|ψ⟩ — Schrödinger
e^(iπ) + 1 = 0 — Euler
∂²u/∂t² = c²∇²u — wave
Σ(i=1..n) = n(n+1)/2
λx.λy.x — Church encoding
∀ε>0 ∃δ>0 : |x-a|<δ
∫₀^∞ e^(-x²) dx = √π/2  ·  φ = (1+√5)/2  ·  ζ(s) = Σ 1/n^s