A criterion of SNT(X) = {[X]} for hyperformal spaces
We will give a condition characterizing spaces X with SNT(X) = {[X]} which generalizes the corresponding result of McGibbon and Moller [8] for rational H-spaces.
Acyclic decomposition of acyclic spaces
Characteristic classes and obstruction theory for infinite loop spaces.
Coalgebra Extensions in Two-Stage Postnikov Systems.
Homology exponents for -spaces.
k-Invariants of knotted 2-spheres.
Lectures on minimal models
Line bundles with . A six dimensional example
We exhibit a six dimensional manifold with a line bundle on it which is not the pullback of a bundle on .
Line bundles with . Higher order obstruction
We study secondary obstructions to representing a line bundle as the pull-back of a line bundle on and we interpret them geometrically.
Localization of Fibrations with Nilpotent Fibre.
Mod p loop space homology.
On Postnikov pieces of finite dimension.
On Postnikov-true families of complexes and the Adams completion
On the homology of the special linear group ove a number field.
On the non-torsion elements in the algebraic K-theory of rings of integers.
On the Unstable Homotopy Spectral Sequences.
Postnikov invariants of H-spaces
It is known that the order of all Postnikov k-invariants of an H-space of finite type is finite. This paper establishes the finiteness of the order of the k-invariants of X in dimensions m ≤ 2n if X is an (n-1)-connected H-space which is not necessarily of finite type (n ≥ 1). Similar results hold more generally for higher k-invariants if X is an iterated loop space. Moreover, we provide in all cases explicit universal upper bounds for the order of the k-invariants of X.
Postnikov Towers Associated with Complex 2-Plane and Symplectic Line Bundles.
Projective k-invariants
Représentation des groupes d'extension. Applications