2 papers
math.AG2010
Derived Resolution Property for Stacks, Euler Classes and Applications
Yi Hu, Jun Li
By resolving an arbitrary perfect derived object over a Deligne-Mumford stack, we define its Euler class. We then apply it to define the Euler numbers for a smooth Calabi-Yau three…
math.AG2000
Combinatorics and Quotients of Toric Varieties
Yi Hu
This paper studies two related subjects. One is some combinatorics arising from linear projections of polytopes and fans of cones. The other is quotient varieties of toric varietie…