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arXiv math/0605554math.ATmath.AG
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Jacobi定向与二元椭圆亏格

The Jacobi orientation and the two-variable elliptic genus

Matthew Ando, Christopher P. French, Nora Ganter

摘要:

我们一方面解释了sigma方向和Witten亏格之间的关系,另一方面解释了两个变量的椭圆亏格之间的关系。我们证明了,如果E是一个椭圆谱,那么立方定理意味着存在的典型SU-定向的Jacobi形式的相关谱。在与泰特曲线相关的椭圆谱的情况下,这给出了两个变量的椭圆亏格。我们还表明,两个变量的属出现作为一个实例的圆等变西格玛方向。

英文摘要:

We explain the relationship between the sigma orientation and Witten genus on the one hand and the two-variable elliptic genus on the other. We show that if E is an elliptic spectrum, then the Theorem of the Cube implies the existence of canonical SU-orientation of the associated spectrum of Jacobi forms. In the case of the elliptic spectrum associated to the Tate curve, this gives the two-variable elliptic genus. We also show that the two-variable genus arises as an instance of the circle-equivariant sigma orientation.

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