亚阿贝尔椭圆KZB结合子与Eisenstein级数的周期
The meta-abelian elliptic KZB associator and periods of Eisenstein series
摘要:
我们计算了Enriquez椭圆KZB结合子在一次穿孔椭圆曲线的基本李代数的(极大)亚阿贝尔商中的像。我们的主要结果是一个明确的公式,这个形象的Eichler积分的爱森斯坦系列,类似于德利涅的计算深度一商的德林费尔德协会。我们还展示了如何检索Zagier的Eisenstein级数的扩展周期多项式,以及在零值的贝林森-莱文的椭圆多项式从亚阿贝尔椭圆KZB结合。
英文摘要:
We compute the image of Enriquez' elliptic KZB associator in the (maximal) meta-abelian quotient of the fundamental Lie algebra of a once-punctured elliptic curve. Our main result is an explicit formula for this image in terms of Eichler integrals of Eisenstein series, and is analogous to Deligne's computation of the depth one quotient of the Drinfeld associator. We also show how to retrieve Zagier's extended period polynomials of Eisenstein series, as well as the values at zero of Beilinson--Levin's elliptic polylogarithms from the meta-abelian elliptic KZB associator.
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