Cohomology of generalized configuration spaces

Cohomology of generalized configuration spaces
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广义配置空间的上同调

DOI:
10.1112/s0010437x19007747
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发表时间:
2018
影响因子:
1.8
通讯作者:
D. Petersen
D. Petersen
中科院分区:
数学1区
文献类型:
--
作者:
D. Petersen

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$X$是一个拓扑空间。我们考虑X$上点的某些广义构形空间,这些空间是从卡氏积X^{n}$中去掉对角线的某些交点而得到的。我们给出了一个系统的框架,研究这种空间的上同调,我们称之为'扭曲交换DG代数模型'的上链的$X$。设$X$是一个“nice”拓扑空间,$R$是任意交换环,$H_{c}^{\bullet}(X,R)$是零映射,$H_{c}^{\bullet }(X,R)$是投射$R$-模。证明了X上任意点的广义位形空间的紧支撑上同调只依赖于分次R-模H_{c}^{\bullet }(X,R)。这推广了Arabia的一个定理。
Let $X$ be a topological space. We consider certain generalized configuration spaces of points on $X$, obtained from the cartesian product $X^{n}$ by removing some intersections of diagonals. We give a systematic framework for studying the cohomology of such spaces using what we call ‘twisted commutative dg algebra models’ for the cochains on $X$. Suppose that $X$ is a ‘nice’ topological space, $R$ is any commutative ring, $H_{c}^{\bullet }(X,R)\rightarrow H^{\bullet }(X,R)$ is the zero map, and that $H_{c}^{\bullet }(X,R)$ is a projective $R$-module. We prove that the compact support cohomology of any generalized configuration space of points on $X$ depends only on the graded $R$-module $H_{c}^{\bullet }(X,R)$. This generalizes a theorem of Arabia.
DOI: 10.1112/s0010437x20007319
发表时间: --
影响因子: 1.8
作者:
Birgit Richter;Steffen Sagave
通讯作者: Steffen Sagave