Correction to: "An obstruction to smoothing of Gorenstein surface singularities".
Correction to "Constructing Lens Spaces by Surgery on Knots".
Correction to "Locally flat 2-spheres in simply connected 4-manifolds".
Correction to “Open books and configurations of symplectic surfaces”.
Correction to “Properties of pseudoholomorphic curves in symplectisations. I : asymptotics”
Correction to: SK1 for Finite Group Rings: I.
Correction to the paper “Compact fiberings of homogeneous spaces. I”
Correspondence between diffeomorphism groups and singular foliations
It is well-known that any isotopically connected diffeomorphism group G of a manifold determines a unique singular foliation . A one-to-one correspondence between the class of singular foliations and a subclass of diffeomorphism groups is established. As an illustration of this correspondence it is shown that the commutator subgroup [G,G] of an isotopically connected, factorizable and non-fixing diffeomorphism group G is simple iff the foliation defined by [G,G] admits no proper minimal sets....
Correspondence between maximal ideals in associative algebras and Lie algebras
Corrigendum et addendum ad: “Minimal cell coverings of sphere bundles over spheres”
Corrigendum to: "Aspherical four-manifolds and the centres of two-knot groups".
Corrigendum to Resolutions of homology manifolds, and the topological characterization of manifolds.
Counterexamples to representing homology classes by real algebraic subvarieties up to homeomorphism
Counterexamples to the Kneser conjecture in dimension four.
Counting fixed points of a finitely generated subgroup of Aff [C].
Given a finitely generated subgroup G of the group of affine transformations acting on the complex line C, we are interested in the quotient Fix( G)/G. The purpose of this note is to establish when this quotient is finite and in this case its cardinality. We give an application to the qualitative study of polynomial planar vector fields at a neighborhood of a nilpotent singular point.
Counting immersed surfaces in hyperbolic 3-manifolds.
Counting Types of Rigid Frameworks.
Courbure totale des feuilletages des surfaces.
Covering homotopy 3-spheres.
Covering maps over solenoids which are not covering homomorphisms
Let Y be a connected group and let f: X → Y be a covering map with the total space X being connected. We consider the following question: Is it possible to define a topological group structure on X in such a way that f becomes a homomorphism of topological groups. This holds in some particular cases: if Y is a pathwise connected and locally pathwise connected group or if f is a finite-sheeted covering map over a compact connected group Y. However, using shape-theoretic techniques and Fox's notion...