Note on the motivic DT/PT correspondence and the motivic Flop formula
Abstract
We prove the motivic version of the DT/PT-correspondence in PT and the motivic flop formula of the curve counting invariants in the derived category of smooth Calabi-Yau threefold DM stacks. The main method we use is Bridgeland's Hall algebra identities and the motivic integration map of Bridgeland and Joyce from the motivic Hall algebra of the abelian category of coherent sheaves on a Calabi-Yau threefold DM stack Y to the motivic quantum torus, which is a Poisson algebra homomorphism.
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