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math.AG1998
Virasoro Constraints For Quantum Cohomology
Xiaobo Liu, Gang Tian
Eguchi-Hori-Xiong and S. Katz proposed a conjecture that the partition function of topological sigma model coupled to gravity is annihilated by infinitely many differential operato…
alg-geom1998
Comparison of the algebraic and the symplectic Gromov-Witten invariants
Jun Li, Gang Tian
We show that the algebraic and the symplectic GW-inivariants of smooth projective varieties are equivalent.