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Deformations of reducible representations of 3–manifold groups into PSL2(C)

Michael Heusener and Joan Porti

Algebraic & Geometric Topology 5 (2005) 965–997

DOI: 10.2140/agt.2005.5.965

arXiv: math.GT/0411365
Abstract

Let M be a 3–manifold with torus boundary which is a rational homology circle. We study deformations of reducible representations of π1(M) into PSL2(C) associated to a simple zero of the twisted Alexander polynomial. We also describe the local structure of the representation and character varieties.

Keywords

variety of representations, character variety, rational homology circle
Mathematical Subject Classification

Primary: 57M27

Secondary: 20C99, 57M05
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Publication

Received: 16 November 2004
Revised: 30 May 2005
Accepted: 25 July 2005
Published: 11 August 2005
Authors
Michael Heusener
Laboratoire de Mathématiques
Université Blaise Pascal
63177 Aubière Cedex
France
Joan Porti
Departament de Matemàtiques
Universitat Autònoma de Barcelona
E-08193 Bellaterra
Spain