A topological resolution theorem
Algebraic Equations for a Class of P.L.Spaces.
An invariant of tangle cobordisms via subquotients of arc rings
We construct an explicit categorification of the action of tangles on tensor powers of the fundamental representation of quantum sl(2).
Effectiveness - non effectiveness in semialgebraic and PL geometry.
Extending Combinatorial PL Structures on Stratified Spaces.
Geometrie Classification of Simplicial Structures on Topologieal Manifolds.
Hauptvermutung et triangulation des variétés
Intersection homology Poincaré spaces and the characteristic variety theorem.
Manifolds with a special type of conelike singularities.
On bundles over a sphere with fibre Euclidean space
On the groups of a sphere
In questo articolo studiamo i gruppi di una sfera e proviamo che il gruppo è isomorfo all'ennesimo gruppo di omotopia di , nell'ipotesi che sia una classe coconnessa di links ammissibili.
On the non-invariance of span and immersion co-dimension for manifolds
In this note we give examples in every dimension of piecewise linearly homeomorphic, closed, connected, smooth -manifolds which admit two smoothness structures with differing spans, stable spans, and immersion co-dimensions. In dimension the examples include the total spaces of certain -sphere bundles over . The construction of such manifolds is based on the topological variance of the second Pontrjagin class: a fact which goes back to Milnor and which was used by Roitberg to give examples...
On the topological structure of compact 5-manifolds
We classify the genus one compact (PL) 5-manifolds and prove some results about closed 5-manifolds with free fundamental group. In particular, let be a closed connected orientable smooth -manifold with free fundamental group. Then we prove that the number of distinct smooth -manifolds homotopy equivalent to equals the -nd Betti number (mod ) of .
The Hauptvermutung for homeomorphisms II. A proof valid for open 4-manifolds
The homeomorphism group of a three-dimensional polyhedron is locally contractible
The Signature Defect and the Homotopy of BPL and PL/O
The Topological-Euclidean Space Form Problem.
Классификация квартик, имеющих непростую особую точку.II.