Communications in Analysis and Geometry

Volume 14 (2006)

Number 2

On the Euler numbers of certain moduli spaces of curves and points

Pages: 387 – 410



Wei-Ping Li

Zhenbo Qin


We determine the topological Euler number of certain moduli space of 1-dimensional closed subschemes in a smooth projective variety which admits a Zariski-locally trivial fibration with 1-dimensional fibers. The main approach is to use virtual Hodge polynomials and torus actions. The results might shed some light on the corresponding Donaldson-Thomas invariants.

2010 Mathematics Subject Classification

Primary 14D20. Secondary 14C05, 14N35.

Published 1 January 2006