Similar to レイリー＝フェイバー＝クラーンの不等式

Arithmetic hyperbolic 3-manifold

Scalar curvature

Ehresmann connection

Connection (vector bundle)

Great circle

Second fundamental form

Sectional curvature

De Sitter space

Nash embedding theorems

Hilbert manifold

Parallel transport

Covariance and contravariance of vectors

Poincaré metric

Hodge star operator

Finite strain theory

Fundamental theorem of Riemannian geometry

Ricci curvature

Levi-Civita connection

Spectral graph theory

Spectral theory

Spectrum of a matrix

Spectral theory of compact operators

Spectrum (functional analysis)

Spectral theorem

Selberg zeta function

Dirichlet eigenvalue