The Salvetti Complex and the Little Cubes

Details The Salvetti Complex and the Little Cubes The Salvetti Complex and the Little Cubes

2006-02-05

arxiv.org/abs/math/0602085v3

Mathematics

Algebraic Topology

40 pages, title changed, substantially rewritten, new section added

Scientific paper

We study how the combinatorial structure of the Salvetti complexes of the braid arrangements are related to homotopy theoretic properties of iterated loop spaces. We prove the skeletal filtrations on the Salvetti complexes of the braid arrangements give rise to the cobar-type Eilenberg-Moore spectral sequence converging to the homology of $\Omega^2\Sigma^2 X$. We also construct a new spectral sequence that computes the homology of $\Omega^{\ell}\Sigma^{\ell} X$ for $\ell>2$ by using a higher order analogue of the Salvetti complex. The $E^1$-term of the spectral sequence is described in terms of the homology of $X$. The spectral sequence is different from known spectral sequences that compute the homology of iterated loop spaces, such as the Eilenberg-Moore spectral sequence and the spectral sequence studied by Ahearn and Kuhn.

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