15-vertex triangulations of an 8-manifold.
A Chain Level Transfer Homomorphism.
A class of 4-pseudomanifolds similar to the lense spaces.
A Concordance Classification of p. 1. Homeomorphisms of Real Projective Space.
A Quick proof of Singhof's cat (M x S1) = cat (M) + 1 theorem.
A Vanishing Theorem for Euler Characteristics.
A WU formula for Euler mod 2 spaces
Almost Canonical Inverse Images
An analytic proof of Novikov's theorem on rational Pontrjagin classes
Area preserving pl homeomorphisms and relations in
To any compactly supported, area preserving, piecewise linear homeomorphism of the plane is associated a relation in of the smallest field whose elements are needed to write the homeomorphism.Using a formula of J. Morita, we show how to calculate the relation, in some simple cases. As applications, a “reciprocity” formula for a pair of triangles in the plane, and some explicit elements of torsion in of certain function fields are found.
Branched Coverings.
Combinatorial Hodge Theory and Signature Operator.
Complements of solenoids in are m-spaces
Complexified real arrangements of hyperplanes.
Computing linking numbers of a filtration.
Constructing manifolds by homotopy equivalences I. An obstruction to constructing PL-manifolds from homology manifolds
We aim at constructing a PL-manifold which is cellularly equivalent to a given homology manifold . The main theorem says that there is a unique obstruction element in , where is the group of 3-dimensional PL-homology spheres modulo those which are the boundary of an acyclic PL-manifold. If the obstruction is zero and is compact, we obtain a PL-manifold which is simple homotopy equivalent to .
Cubical approximation and computation of homology
The purpose of this article is to introduce a method for computing the homology groups of cellular complexes composed of cubes. We will pay attention to issues of storage and efficiency in performing computations on large complexes which will be required in applications to the computation of the Conley index. The algorithm used in the homology computations is based on a local reduction procedure, and we give a subquadratic estimate of its computational complexity. This estimate is rigorous in two...
Cubulations, immersions, mappability and a problem of Habegger
Cyclic Crystallizations of Spheres.
El teorema del punto fijo sin homología: un enfoque combinatorio.