75 citations · 157 across the 11 of their papers we have counts for
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math.AG2011★ 9 cited
Semi-Perfect Obstruction theory and DT Invariants of Derived Objects
Huai-liang Chang, Jun Li
We introduce semi-perfect obstruction theory of a Deligne-Mumford stack consisting of local perfect obstruction theories with weak comparisons on overlaps. We show that semi-pe…
math.AG2011★ 19 cited
Gromov-Witten invariants of stable maps with fields
Huai-liang Chang, Jun Li
We construct the Gromov-Witten invariants of moduli of stable morphisms to $\Pf$ with fields. This is the all genus mathematical theory of the Guffin-Sharpe-Witten model, and is a…