On the homotopy embeddability of complexes in Euclidean space. I. The weak thickening theorem.
On the Hurewicz theorem for wedge sum of spheres.
On the Lusternik-Schnirelmann category in the theory of shape
On the shape of 0-dimensional paracompacta
On the shape of MAR and MANR-spaces
On the Weak Covering Homotopy Property.
On the Whitehead Theorem in shape theory
On the Whitehead theorem in shape theory I
On the Whitehead theorem in shape theory II
On three types of simplicial objects
On Yetter's invariant and an extension of the Dijkgraaf-Witten invariant to categorical groups.
On Δ-spaces and fundamental dimension in the sense of Borsuk
Partitions of unity in homotopy theory
Pointed and unpointed shape and pro-homotopy
Profondeur homotopique et conjecture de grothendieck
Proper CW-complexes: A category for the study of proper homotopy.
Proper homotopies in -manifolds
Proper shape retracts
Pseudo-homotopies of the pseudo-arc
Let be a continuum. Two maps are said to be pseudo-homotopic provided that there exist a continuum , points and a continuous function such that for each , and . In this paper we prove that if is the pseudo-arc, is one-to-one and is pseudo-homotopic to , then . This theorem generalizes previous results by W. Lewis and M. Sobolewski.
Quelques problèmes d'homotopie et d'isotopie dans les variétés de dimension 3 non irréductibles
Cette note résume une étude sur la comparaison des relations d’homotopie et d’isotopie dans les problèmes suivants : disjonction de deux sphères plongées, plongement de sphères dans une variété de dimension 3 satisfaisant à la conjecture de Poincaré. On mentionne une application aux décompositions en anses des variétés de dimension 4.