An introduction to motivic Hall algebras
An introduction to motivic Hall algebras
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DOI:
10.1016/j.aim.2011.09.003
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发表时间:
2010-02
期刊:
影响因子:
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通讯作者:
T. Bridgeland
中科院分区:
文献类型:
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作者:
T. Bridgeland
We give an introduction to Joyceʼs construction of the motivic Hall algebra of coherent sheaves on a variety M. When M is a Calabi–Yau threefold we define a semi-classical integration map from a Poisson subalgebra of this Hall algebra to the ring of functions on a symplectic torus. This material will be used in Bridgeland (2011) [3] to prove some basic properties of Donaldson–Thomas curve-counting invariants on Calabi–Yau threefolds.