The Non-existence of Tensorproducts for Free Group Actions on Spheres
Unit Signatures, the Stickelberger Ideal, and the 2-class Group of Cyclotomic Fields of Prime-power Conductor
On the Finiteness Obstruction of Certain Periodic Groups
On the Swan Subgroup of Certain Periodic Groups
A Density Theorem
Unit Signatures and the 2-class Group of Cyclotomic Fields of Prime Power Conductor
On the Image of the Trace Coefficient Homomorphism
Some Numerical Results on Space Forms
Duality of Cyclotomic Units and the 2-torsion of U/C
Trace Maps in Algebraic K-theory and the Coates-Wiles Homomorphism
Endelighedsobstruktionen Og Talteoretiske Problemer i Relation Til Det Topologiske Rumformsproblem
Steffen Schorn's Universe of possibilities