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arXiv 1302.0638math.AT
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有限代数去环同调的谱序列

A spectral sequence for the homology of a finite algebraic delooping

Birgit Richter, Stephanie Ziegenhagen

摘要:

在链复形的世界中,E_n-代数是拓扑空间范畴中基n重闭路空间的类似物。Fresse证明了E_n-代数的运算E_n-同调计算了n重代数去环的同调。本文的目的是构造两个计算这些同调群的谱序列,并处理一些具体的例子,如Hochschild上链,分次多项式代数和迭代闭路空间上的链.利用Gerstenhaber代数的不可分解的导出函子和导出Kähler微分的外幂和对称幂的同调,在特征零点处,我们得到了高阶霍赫希尔德同调的Pirashvili Hodge分解的和项的一个识别.

英文摘要:

In the world of chain complexes E_n-algebras are the analogues of based n-fold loop spaces in the category of topological spaces. Fresse showed that operadic E_n-homology of an E_n-algebra computes the homology of an n-fold algebraic delooping. The aim of this paper is to construct two spectral sequences for calculating these homology groups and to treat some concrete classes of examples such as Hochschild cochains, graded polynomial algebras and chains on iterated loop spaces. In characteristic zero we gain an identification of the summands in Pirashvili's Hodge decomposition of higher order Hochschild homology in terms of derived functors of indecomposables of Gerstenhaber algebras and as the homology of exterior and symmetric powers of derived Kähler differentials.

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