Witt vectors, Lambda-rings, and absolute algebraic geometry
by Jim Borger
Abstract: I will explain how the closely related concepts of Witt vector and Lambda-ring give rise to a kind of algebraic geometry that is, in a precise sense, over a deeper base than the ring of integers, the usual base in arithmetic algebraic geometry. I will also say something about how this related to other issues in arithmetic algebraic geometry.
For More Information: S.Tillmann@ms.unimelb.edu.au