math/0503308Mar 15, 2005Title changed, includes an expository section on (algebraic) stacks; essentially in final form, to appear in Adv. Math
Comodule categories and the geometry of the stack of formal groups
Niko Naumann
Abstract
We generalise recent results of M. Hovey and N. Strickland on comodule categories for Landweber exact algebras using the formalism of algebraic stacks.