1. Cohomology of generalized configuration spaces.
- Author
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Petersen, Dan
- Subjects
- *
CONFIGURATION space , *GENERALIZED spaces , *TOPOLOGICAL spaces , *COMMUTATIVE algebra , *COMMUTATIVE rings , *COHOMOLOGY theory , *ANALYTIC geometry - Abstract
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. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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