On classification of -manifolds according to genus
On the intersection forms of spin 4-manifolds bounded by spherical 3-manifolds.
On the linearization theorem for proper Lie groupoids
We revisit the linearization theorems for proper Lie groupoids around general orbits (statements and proofs). In the fixed point case (known as Zung’s theorem) we give a shorter and more geometric proof, based on a Moser deformation argument. The passage to general orbits (Weinstein) is given a more conceptual interpretation: as a manifestation of Morita invariance. We also clarify the precise statements of the Linearization Theorem (there has been some confusion on this, which has propagated throughout...
On the Symplectic Cobordism Ring.
One codimensional Wecken type theorems.
Rigidity of hypersurfaces in complex projective space
Su una congettura di Nash
The minimum number of zeros of Lipschitz-Killing curvature.
The systolic constant of orientable Bieberbach 3-manifolds
A compact manifold is called Bieberbach if it carries a flat Riemannian metric. Bieberbach manifolds are aspherical, therefore the supremum of their systolic ratio, over the set of Riemannian metrics, is finite by a fundamental result of M. Gromov. We study the optimal systolic ratio of compact -dimensional orientable Bieberbach manifolds which are not tori, and prove that it cannot be realized by a flat metric. We also highlight a metric that we construct on one type of such manifolds () which...
The tangent stars of a set, and extensions of smooth functions.
Topologische Eigenschaften von Kompaktifizierungen glatter offener Mannigfaltigkeiten
Transversality and the inverse image of a submanifold with corners.
Un aperçu de l'oeuvre de Thom en topologie différentielle (jusqu'en 1957)
Un théorème de quasi-transversalité
Univalent mappings of the plane into itself
Volume and bounded cohomology