Class numbers and periodic smooth maps.
Classification of free actions by some metacyclic groups on
Close PL involutions of 3-manifolds have close fixed point sets: 1-dimensional components
Close PL involutions of 3-manifolds which are conjugate by a small homeomorphism
Cohomology and group actions.
Cohomology and Group Actions.
Commuting involutions whose fixed point set consists of two special components
Let Fⁿ be a connected, smooth and closed n-dimensional manifold. We call Fⁿ a manifold with property when it has the following property: if is any smooth closed m-dimensional manifold with m > n and is a smooth involution whose fixed point set is Fⁿ, then m = 2n. Examples of manifolds with this property are: the real, complex and quaternionic even-dimensional projective spaces , and , and the connected sum of and any number of copies of Sⁿ × Sⁿ, where Sⁿ is the n-sphere and n is not...
Computing Adams operations on the Burnside ring of a finite group.
Cyclic actions on - and -bundles over
Cyclic branched coverings and homology 3-spheres with large group actions
We show that, if the covering involution of a 3-manifold M occurring as the 2-fold branched covering of a knot in the 3-sphere is contained in a finite nonabelian simple group G of diffeomorphisms of M, then M is a homology 3-sphere and G isomorphic to the alternating or dodecahedral group 𝔸₅ ≅ PSL(2,5). An example of such a 3-manifold is the spherical Poincaré sphere. We construct hyperbolic analogues of the Poincaré sphere. We also give examples of hyperbolic ℤ₂-homology 3-spheres with PSL(2,q)-actions,...
Cyclic group actions on odd-dimensional spheres.
Deformations of Algebras and Cohomology of Fixed Point Sets.
Deleting-Inserting Theorem for smooth actions of finite nonsolvable groups on spheres.
Depth and equivariant cohomology.
Die Existenz freier Zk-Operationen auf rationalen Homologiesphären.
Dimension Functions of Homotopy Representations for Compact Lie Groups.
Eine Kongruenz für Gitter und ihre Anwendung auf 2k-Mannigfaltigkeiten in 4k-Mannigfaltigkeiten.
Elements of finite order in the fundamental group of a branched cyclic covering.
Endliche Gruppen von Abbildungsklassen gefaserter 3-Mannigfaltigkeiten.
Ends of Maps, II.