Sichuan University

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20022009

most citedReply to the Comment on "Spin and orbital angular momentum in gauge theories: Nucleon spin structure and multipole radiation revisited" [PRL 100:232002 (2008)]

198 citations

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2 papers · 1 filter

math.SG2008★ 1 cited

Singular symplectic flops and Ruan cohomology

Bohui Chen, An-Min Li, Qi Zhang +1

In this paper, we study the symplectic geometry of singular conifolds of the finite group quotient $W_{r} = {(x, y, z, t) ∣ x y - z^{2 r} + t^{2} = 0} / μ_{r} (a, - a, 1, 0), r \geq 1,$ which we call or…

math.SG2006★ 67 cited

Birational cobordism invariance of uniruled symplectic manifolds

Jianxun Hu, Tian-Jun Li, Yongbin Ruan

A symplectic manifold $(M, ω)$ is called {\em (symplectically) uniruled} if there is a nonzero genus zero GW invariant involving a point constraint. We prove that symplectic unirule…