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Hatcher, Allen and Vogtmann, Karen (2017) Tethers and homology stability for surfaces. Algebraic and Geometric Topology, 17 (3). pp. 1871-1916. doi:10.2140/agt.2017.17.1871 ISSN 1472-2747.
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Official URL: https://doi.org/10.2140/agt.2017.17.1871
Abstract
Homological stability for sequences of groups is often proved by studying the spectral sequence associated to the action of a typical group in the sequence on a highly-connected simplicial complex whose stabilizers are related to previous groups in the sequence. In the case of mapping class groups of manifolds, suitable simplicial complexes can be made using isotopy classes of various geometric objects in the manifold. In this paper we focus on the case of surfaces and show that by using more refined geometric objects consisting of certain configurations of curves with arcs that tether these curves to the boundary, the stabilizers can be greatly simplified and consequently also the spectral sequence argument. We give a careful exposition of this program and its basic tools, then illustrate the method using braid groups before treating mapping class groups of orientable surfaces in full detail.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QA Mathematics | ||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Mathematics | ||||||
| Library of Congress Subject Headings (LCSH): | Homology theory, Manifolds (Mathematics), Surfaces | ||||||
| Journal or Publication Title: | Algebraic and Geometric Topology | ||||||
| Publisher: | Mathematical Sciences Publishers | ||||||
| ISSN: | 1472-2747 | ||||||
| Official Date: | 17 July 2017 | ||||||
| Dates: |
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| Volume: | 17 | ||||||
| Number: | 3 | ||||||
| Page Range: | pp. 1871-1916 | ||||||
| DOI: | 10.2140/agt.2017.17.1871 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
| Date of first compliant deposit: | 22 February 2017 | ||||||
| Date of first compliant Open Access: | 9 August 2017 | ||||||
| Related URLs: | |||||||
| Open Access Version: |
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