On projective and injective objects of the categories dual to .
On prosolvable subgroups of profinite free products and some applications.
On spaces with periodic cohomology.
On Structure of Weyl Modules.
On the 1-Cohomology of the General and Special Linear Groups.
On the Burnside ring and stable cohomotopy of a finite group.
On the Canonical k-Types in the Irreducible Unitary g-Modules with Non-Zero Relative Cohomology.
On the cohomology of groups of p-length 1.
On the Euler class of representations of finite groups over real fields.
On the existence of group localizations under large-cardinal axioms.
Uno de los problemas abiertos más antiguos de la teoría de grupos categórica es si todo par ortogonal (formado por una clase de grupos y una clase de homomorfismos que se determinan mutuamente por ortogonalidad en el sentido de Freyd-Kelly), se halla asociado a un funtor de localización. Se sabe que esto es cierto si se acepta la validez de un cierto axioma de cardinales grandes (el principio de Vopenka), pero no se conoce ninguna demostración mediante los axiomas ordinarios (ZFC) de la teoría de...
On the Farrell cohomology of mapping class groups.
On the finiteness obstruction of certain periodic groups.
On the Genus of a Nilpotent Group with Finite Commutator Subgroup.
On the Homology and Cohomology of Congruence Subgroups.
On the homology of Lie groups made discrete.
On the Homology Theory of Central Group Extensions: I - The Commutator Map and Stem Extensions
On the Homology Theory of Central Group Extensions II. The Exact Sequence in the General Case
On the p-periodicity of arithmetic subgroups of general linear groups.
On the Schur Multipliers of Steinberg and Chevalley Groups over Commutative Rings.
On the Second Cohomology Groups of Semidirect Products.