Similar to ハルトークスの拡張定理

Sesquilinear form#Hermitian form

Self-adjoint operator

Hermite polynomials

Hermitian manifold

Anabelian geometry

Enneper surface

Euler angles

Euler diagram

Euler numbers

Euler product

Euler integral

Euler line

Pentagonal number theorem

Euler's four-square identity

Euler's quadrilateral theorem

Euler's constant

Euler's theorem in geometry

Euler's theorem (differential geometry)

Euler's theorem

Euler's totient function

Euler–Maclaurin formula

Euler characteristic

Poncelet point

Euler's sum of powers conjecture

Euler–Lagrange equation