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Algorithmic and geometric topics around free groups and automorphisms / Javier Aramayona, Volker Diekert, Christopher J. Leininger, Pedro V. Silva, Armin Weiss ; edited by Juan González-Meneses, Martin Lustig, Enric Ventura.

9783319609409 (electronic book)
3319609408 (electronic book)
9783319609393
3319609394

Cham : Birkhäuser, 2017.

English

1 online resource (ix, 151 pages)

10.1007/978-3-319-60940-9 doi

QA174.2

512/.2

This volume presents the lecture notes from the authors three summer courses offered during the program Automorphisms of Free Groups: Geometry, Topology, and Dynamics held at the Centre de Recerca Matemtica (CRM) in Bellaterra, Spain. The first two chapters present the basic tools needed, from formal language theory (regular and context-free languages, automata, rewriting systems, transducers, etc) and emphasize their connections to group theory, mostly relating to free and virtually-free groups. The material covered is sufficient to present full proofs of many of the existing interesting characterizations of virtually-free groups. In turn, the last chapter comprehensively describes Bonahons construction of Thurstons compactification of Teichmller space in terms of geodesic currents on surfaces. It also includes several intriguing extensions of the notion of geodesic current to various other, more general settings.

Includes bibliographical references.

Access limited to authorized users.

Description based on print version record.

Advanced courses in mathematics, CRM Barcelona.

Print version: 9783319609393

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