Section and Base-Point Functors.
Self-equivalences of dihedral spheres.
Shape evaluation groups
Simplicial maps from the 3-sphere to the 2-sphere.
Simplicial T-complexes and crossed complexes: a non-abelian version of a theorem of Dold and Kan [Book]
Simplified Voronoi Diagrams.
Simply connected right multipeak algebras and the separation property
Let R=k(Q,I) be a finite-dimensional algebra over a field k determined by a bound quiver (Q,I). We show that if R is a simply connected right multipeak algebra which is chord-free and -free in the sense defined below then R has the separation property and there exists a preprojective component of the Auslander-Reiten quiver of the category prin(R) of prinjective R-modules. As a consequence we get in 4.6 a criterion for finite representation type of prin(R) in terms of the prinjective Tits quadratic...
Some analogs of Zariski's Theorem on nodal line arrangements.
Some examples of nonsingular Morse-Smale vector fields on
One wonders or not whether it is possible to determine the homotopy class of a vector field by examining some algebraic invariants associated with its qualitative behavior. In this paper, we investigate the algebraic invariants which are usually associated with the periodic solutions of non-singular Morse-Smale vector fields on the 3-sphere. We exhibit some examples for which there appears to be no correlation between the algebraic invariants of the periodic solutions and the homotopy classes of...
Some extension and classification theorems for maps of movable spaces
Some homotopy theoretical questions arising in Nielsen coincidence theory
Basic examples show that coincidence theory is intimately related to central subjects of differential topology and homotopy theory such as Kervaire invariants and divisibility properties of Whitehead products and of Hopf invariants. We recall some recent results and ask a few questions which seem to be important for a more comprehensive understanding.
Some infinte families of U-hypersurfaces.
Some Properties of the b-Product.
Some surgery formulae for maps into
Some Topological Properties of Kähler Manifolds and Homogeneous Spaces.
Sphères d'homotopie nouées
Stabilisation de la -théorie algébrique des espaces topologiques
Stability Results for Topological Spaces.
Stable cohomotopy groups of compact spaces
We show that one can reduce the study of global (in particular cohomological) properties of a compact Hausdorff space X to the study of its stable cohomotopy groups . Any cohomology functor on the homotopy category of compact spaces factorizes via the stable shape category ShStab. This is the main reason why the language and technique of stable shape theory can be used to describe and analyze the global structure of compact spaces. For a given Hausdorff compact space X, there exists a metric compact...
Stably spherical classes in the K-homology of a finite group.