Bases of total Witt groups and lax-similitude

Paul Balmer (1) , Baptiste Calmès (2)

1 Department of Mathematics [UCLA]
2 LML - Laboratoire de Mathématiques de Lens

We explain how to work with total Witt groups, more specifically, how to circumvent the classical embarrassment of making choices for line bundles up to isomorphisms and up to squares.

Domaines: K-théorie et homologie [math.KT]; Géométrie algébrique [math.AG]

Paul Balmer, Baptiste Calmès. Bases of total Witt groups and lax-similitude. 2011. ⟨hal-00604020⟩