论文信息 - v 3 4 M ay 2 00 5 Some remarks on Gopakumar-Vafa invariants .

v 3 4 M ay 2 00 5 Some remarks on Gopakumar-Vafa invariants .

We show that Gopakumar-Vafa (GV) invariants can be expressed in terms of the cohomology ring of moduli space of D-branes without reference to the (sl2)L ⊕ (sl2)R action. We also give a simple construction of this action.

A. Schwarz | I. Shapiro

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