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math.AG2012
Behrend's function is constant on Hilb^n(C^3)
Andrew Morrison
We prove that Behrend's function is constant on Hilb^n(C^3). A calculation of motivic zeta functions shows the relevant Milnor fibers have zero Euler characteristic. As a corollary…
math.AG2012
Motivic Classes of Commuting Varieties via Power Structures
Jim Bryan, Andrew Morrison
We prove a formula, originally due to Feit and Fine, for the class of the commuting variety in the Grothendieck group of varieties. Our method, which uses a power structure on the…