This site is devoted to mathematics and its applications. Created and run by Peter Saveliev.

# Greatest formulas

### From Mathematics Is A Science

Most beautiful formulas in the whole mathematics...

Euler-Poincare formula: $$χ(K) = ∑_k(-1)^kβ_k(K)$$

Stokes theorem: $$\int_σ dω = \int_{∂σ} ω,$$

Gauss-Bonnet formula
$$ʃʃ_MKdV=2πχ(M).$$

More odd then beautiful: $$e^{\pi i}=-1.$$