Dimer Models and Calabi-Yau Algebras(Memoirs of the American Mathematical Society)

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代数几何学

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作      者
出版时间
2012年02月29日
装      帧
ISBN
9780821853085
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页      码
86
开      本
26 cm
语      种
英文
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图书简介
In this article the author uses techniques from algebraic geometry and homological algebra, together with ideas from string theory to construct a class of 3-dimensional Calabi-Yau algebras. The Calabi-Yau property appears throughout geometry and string theory and is increasingly being studied in algebra. He further shows that the algebras constructed are examples of non-commutative crepant resolutions (NCCRs), in the sense of Van den Bergh, of Gorenstein affine toric threefolds. Dimer models, first studied in theoretical physics, give a way of writing down a class of non-commutative algebras, as the path algebra of a quiver with relations obtained from a `superpotential?. Some examples are Calabi-Yau and some are not. The author considers two types of `consistency? conditions on dimer models, and shows that a `geometrically consistent? dimer model is `algebraically consistent?. He proves that the algebras obtained from algebraically consistent dimer models are 3-dimensional Calabi-Yau algebras. This is the key step which allows him to prove that these algebras are NCCRs of the Gorenstein affine toric threefolds associated to the dimer models.
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