Similar to フェルマー＝カタラン予想

Hermitian matrix

Sesquilinear form#Hermitian form

Self-adjoint operator

Hermite polynomials

Hermitian manifold

Enneper surface

Euler angles

Euler diagram

Euler numbers

Euler integral

Euler line

Euler's formula

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–Maclaurin formula

Euler characteristic

Poncelet point

Euler–Lagrange equation

Theta operator

Ore's theorem

Oka's lemma