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