Discriminants and Local Invariants of Planar Fronts -- Crofton Densities, Symplectic Geometry and Hilbertโ{128}{153}s Fourth Problem -- Projective Convex Curves -- Topological Classification of Real Trigonometric Polynomials and Cyclic Serpents Polyhedron -- Singularities of Short Linear Waves on the Plane -- New Generalizations of Poincarรฉโ{128}{153}s Geometric Theorem -- Explicit Formulas for Arnoldโ{128}{153}s Generic Curve Invariants -- Nonlinear Integrable Equations and Nonlinear Fourier Transform -- Elliptic Solutions of the Yang-Baxter Equation and Modular Hypergeometric Functions -- Combinatorics of Hypergeometric Functions Associated with Positive Roots -- Local Invariants of Mappings of Surfaces into Three-Space -- Theorem on Six Vertices of a Plane Curve Via Sturm Theory -- The Arfโ{128}{148}Invariant and the Arnold Invariants of Plane Curves -- Produit cyclique dโ{128}{153}espaces et opรฉrations de Steenrod -- Characteristic Classes of Singularity Theory -- Value of Generalized Hypergeometric Function at Unity -- Harish-Chandra Decomposition for Zonal Spherical Function of type An -- Positive Paths in the Linear Symplectic Group -- Invariants of Submanifolds in Euclidean Space -- On Combinatorics and Topology of Pairwise Intersections of Schubert Cells in SLn/B