Volume 14 (2008)

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ISSN (electronic): 1464-8997
ISSN (print): 1464-8989

The Zieschang Gedenkschrift

Editors: Michel Boileau, Martin Scharlemann and Richard Weidmann

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Heiner Zieschang (1936-2004)


This volume is dedicated to Heiner Zieschang, who has been a teacher, mentor and friend to us and to those that have contributed the work below.


Geometry & Topology Monographs 14 (2008)

DOI: 10.2140/gtm.2008.14

Homology of the mapping class group Γ2,1 for surfaces of genus 2 with a boundary curve
1

Jochen Abhau, Carl-Friedrich Bödigheimer and Ralf Ehrenfried

A classification of special 2–fold coverings
27

Anne Bauval, Daciberg L Gonçalves, Claude Hayat and Maria Hermínia de Paula Leite Mello

On multiplicity of mappings between surfaces
49

Semeon Bogatyi, Jan Fricke and Elena Kudryavtseva

A Magnus theorem for some one-relator groups
63

Oleg Bogopolski and Konstantin Sviridov

Roots of torsion polynomials and dominations
75

Michel Boileau, Steve Boyer and Shicheng Wang

A characterisation of S³ among homology spheres
83

Michel Boileau, Luisa Paoluzzi and Bruno Zimmermann

On invertible generating pairs of fundamental groups of graph manifolds
105

Michel Boileau and Richard Weidmann

A condition that prevents groups from acting nontrivially on trees
129

Martin R Bridson

Intersections of conjugates of Magnus subgroups of one-relator groups
135

Donald J Collins

Non compact Euclidean cone 3–manifolds with cone angles less than 2π
173

Daryl Cooper and Joan Porti

Minimizing the number of Nielsen preimage classes
193

Olga Frolkina

Some quadratic equations in the free group of rank 2
219

Daciberg Gonçalves, Elena Kudryavtseva and Heiner Zieschang

Roots in 3–manifold topology
295

Cynthia Hog-Angeloni and Sergei Matveev

Free group automorphisms with many fixed points at infinity
321

André Jäger and Martin Lustig

Noncoherence of some lattices in Isom(Hn)
335

Michael Kapovich, Leonid Potyagailo and Ernest Vinberg

The first Alexander Z(Z)–modules of surface-links and of virtual links
353

Akio Kawauchi

Minimizing coincidence numbers of maps into projective spaces
373

Ulrich Koschorke

Finite groups acting on 3–manifolds and cyclic branched coverings of knots
393

Mattia Mecchia

Epimorphisms between 2–bridge link groups
417

Tomotada Ohtsuki, Robert Riley and Makoto Sakuma

Refilling meridians in a genus 2 handlebody complement
451

Martin Scharlemann

Tangential LS–category of K(π,1)–foliations
477

Wilhelm Singhof and Elmar Vogt

The rank of the fundamental group of certain hyperbolic 3–manifolds fibering over the circle
505

Juan Souto

Remarks on the cohomology of finite fundamental groups of 3–manifolds
519

Satoshi Tomoda and Peter Zvengrowski

On the number of optimal surfaces
557

Alina Vdovina