53D12 Ellipsoid Modular forms and associated L-functions The complex hyperquadric Shape operator Conformally flat hypersurface Centroaffine hypersurface Parallel Ricci tensor Riemannian submersions Hyperovaloid Pseudo Riemannian geometry Constant sectional curvature Perturbation Affine hypersphere Compact symmetric spaces Affine metric Tchebychev hypersurface Difference tensor Affine hypersurfaces Riemann hypothesis H-umbilical Lagrangian submanifold Primary 53C42 Formes modulaires et fonctions L associées Affine hypersurface Nearly Kähler geometry Spectral geometry Gauss map Friction-induced vibration Biharmonic hypersurfaces Répartition des zéros Distribution of zeros Nonlinear vibration Product submanifold Einstein hypersurface A-points de fonctions L Δ-invariants Nearly Kähler S3×S3 Projection Riemannian submersion Biharmonic maps Differential geometry of local submanifolds Simons type integral inequality Minimal Lagrangian submanifolds Ideal submanifolds Hopf hypersurface Secondary 53B25 Optimal inequality Levi-Civita connection L'hypothèse de Riemann Homotopy A-points of L-functions Selberg class Le critère de Li Isoparametric hypersurface Minimal Lagrangian submanifold La classe de Selberg Quadratic Eigenvalue Problem Chen and Nagano’s two-numbers Kaehler manifolds Calabi product immersion Finite type theory for maps and immersions Constant mean curvature Complex space form Li criterion Lagrangian submanifold Δ-invariants and basic inequalities Minimal submanifolds