The compression theorem I.
The compression theorem II: directed embeddings.
The compression theorem III: Applications.
The link of an extrovert divide
The Lyusternik-Shnirel'man category, vector bundles, and immersions of manifolds.
The minimum number of zeros of Lipschitz-Killing curvature.
The Nash-Kuiper process for curves
A strictly short embedding is an embedding of a Riemannian manifold into an Euclidean space that strictly shortens distances. From such an embedding, the Nash-Kuiper process builds a sequence of maps converging toward an isometric embedding. In that paper, we describe this Nash-Kuiper process in the case of curves. We state an explicit formula for the limit normal map and perform its Fourier series expansion. We then adress the question of Holder regularity of the limit map.
The push-out space of immersed spheres.
The Smale invariant of a knot.
Tight immersions of highly connected manifolds.
Totale Absolutkrümmung von Hyperflächen