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2/4 Cohomological Hall Algebras and Motivic Invariants for Quivers

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2/4 Cohomological Hall Algebras and Motivic Invariants for Quivers
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We motivate, define and study Donaldson-Thomas invariants and Cohomological Hall algebras associated to quivers, relate them to the geometry of moduli spaces of quiver representations and (in special cases) to Gromov-Witten invariants, and discuss the algebraic structure of Cohomological Hall algebras.
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