2 papers
math.AC2007
Dualities and intersection multiplicities
Anders J. Frankild, Esben Bistrup Halvorsen
Let R be a commutative, noetherian, local ring. Topological Q-vector spaces modelled on full subcategories of the derived category of R are constructed in order to study intersecti…
math.AC2007
Diagonalizing the Frobenius
Esben Bistrup Halvorsen
Over a Noetherian, local ring R of prime characteristic p, the Frobenius functor F induces a diagonalizable map on certain quotients of rational Grothendieck groups. This leads to…