The homotopy types of moment-angle complexes for flag complexes
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Publication:2790743
DOI10.1090/TRAN/6578zbMATH Open1335.55007arXiv1211.0873OpenAlexW2559012494MaRDI QIDQ2790743
Author name not available (Why is that?)
Publication date: 8 March 2016
Published in: (Search for Journal in Brave)
Abstract: We study the homotopy types of moment-angle complexes, or equivalently, of complements of coordinate subspace arrangements. The overall aim is to identify the simplicial complexes K for which the corresponding moment-angle complex Z_K has the homotopy type of a wedge of spheres or a connected sum of sphere products. When K is flag, we identify in algebraic and combinatorial terms those K for which Z_K is homotopy equivalent to a wedge of spheres, and give a combinatorial formula for the number of spheres in the wedge. This extends results of Berglund and Joellenbeck on Golod rings and homotopy theoretical results of the first and third authors. We also establish a connection between minimally non-Golod rings and moment-angle complexes Z_K which are homotopy equivalent to a connected sum of sphere products. We go on to show that for any flag complex K the loop spaces of Z_K and DJ(K) are homotopy equivalent to a product of spheres and loops on spheres when localised rationally or at any odd prime.
Full work available at URL: https://arxiv.org/abs/1211.0873
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