Strongly differentiable monoids with smooth boundary.
Strongly indefinite functionals with perturbed symmetries and multiple solutions of nonsymmetric elliptic systems.
Structurally stable perturbations of polynomials in the Riemann sphere
Structure morphisms of prolongation functors
Structure of second-order symmetric Lorentzian manifolds
, that is to say, Lorentzian manifolds with vanishing second derivative of the curvature tensor , are characterized by several geometric properties, and explicitly presented. Locally, they are a product where each factor is uniquely determined as follows: is a Riemannian symmetric space and is either a constant-curvature Lorentzian space or a definite type of plane wave generalizing the Cahen–Wallach family. In the proper case (i.e., at some point), the curvature tensor turns out to...
Structure of symmetry groups via Cartan's method: survey of four approaches.
Structure of the group of homeomorphisms preserving a good measure on a compact manifold
Structures de contact, extension du calcul des jets (1ère partie)
Structures de contact, extension du calcul des jets (2ème partie)
Structures de Jacobi sur une variété des points proches
Structures de variétés bimodelées et dynamique analytique des milieux continus
Structures symplectiques faibles et intégrabilité globale de certains systèmes hamiltoniens
Study of Dobrushin's critical coupling in rotator models
Study of exponential stability of coupled wave systems via distributed stabilizer.
Su una congettura di Nash
Subcritical perturbations of resonant linear problems with sign-changing potential.
Subdifferentials of Performance Functions and Calculus of Coderivatives of Set-Valued Mappings
The paper contains calculus rules for coderivatives of compositions, sums and intersections of set-valued mappings. The types of coderivatives considered correspond to Dini-Hadamard and limiting Dini-Hadamard subdifferentials in Gˆateaux differentiable spaces, Fréchet and limiting Fréchet subdifferentials in Asplund spaces and approximate subdifferentials in arbitrary Banach spaces. The key element of the unified approach to obtaining various calculus rules for various types of derivatives presented...
Subhomeotopy groups of the 2-sphere with n holes
Sublinear eigenvalue problems on compact Riemannian manifolds with applications in Emden-Fowler equations
Let (M,g) be a compact Riemannian manifold without boundary, with dim M ≥ 3, and f: ℝ → ℝ a continuous function which is sublinear at infinity. By various variational approaches, existence of multiple solutions of the eigenvalue problem , σ ∈ M, ω ∈ H₁²(M), is established for certain eigenvalues λ > 0, depending on further properties of f and on explicit forms of the function K̃. Here, stands for the Laplace-Beltrami operator on (M,g), and α, K̃ are smooth positive functions. These multiplicity...
Submanifold geometry and Hessians on the pseudoriemannian manifold of metrics.