Some remarks on symplectic actions of compact groups.
Some remarks on the discrete Morse-Smale characteristic.
Some remarks on tubular neighborhoods and gluing in Morse-Floer homology
We discuss the gluing principle in Morse-Floer homology and show that there is a gap in the traditional proof of the converse gluing theorem. We show how this gap can be closed by the use of a uniform tubular neighborhood theorem. The latter result is only stated here. Details are given in the authors' paper, Tubular neighborhoods and the Gluing Principle in Floer homology theory, to appear.
Some results about Mastrogiacomo cohomology.
Some stability questions concerning caustics for different propagation laws.
Some Surfaces that are Distinguishable by the Global Expression of Their Volume Elements.
Some surgery formulae for maps into
Some topics concerning homeomorphic parameterizations.
In this survey, we consider several questions pertaining to homeomorphisms, including criteria for their existence in certain circumstances, and obstructions to their existence.
Some Topological Properties of Kähler Manifolds and Homogeneous Spaces.
Some topologically locally-flat surfaces in the complex projective plane.
Some Totally Real Embeddings of Three-Manifolds.
Some variants of Deligne-Grothendieck-MacPherson's natural transformation C* of Chern class.
Spaces of polynomials with roots of bounded multiplicity
We describe an alternative approach to some results of Vassiliev ([Va1]) on spaces of polynomials, by applying the "scanning method" used by Segal ([Se2]) in his investigation of spaces of rational functions. We explain how these two approaches are related by the Smale-Hirsch Principle or the h-Principle of Gromov. We obtain several generalizations, which may be of interest in their own right.
Space-time distributions.
Special Connections on Almost-Multifoliate Riemannian Manifolds.
Specialization of MacPherson's Chern classes.
Specialization of Segre classes of singular algebraic varieties.
Sphères d'homologie rationnelle
Sphères d'homotopie nouées
Spherical Fibrations and Manifolds.