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COMPLEXIFICATION OF LAMBDA LENGTH AS PARAMETER FOR SL$(2,{\Bbb C})$ REPRESENTATION SPACE OF PUNCTURED SURFACE GROUPS

Published online by Cambridge University Press:  01 October 2004

TOSHIHIRO NAKANISHI
Affiliation:
Graduate School of Mathematics, Nagoya University, Nagoya 464-8602, [email protected] Current address:, Department of Mathematics, Shimane University, Matsue 690-8504, [email protected]
MARJATTA NÄÄTÄNEN
Affiliation:
Department of Mathematics, PL 4 (Yliopistonkatu 5), 00014 University of Helsinki, [email protected]
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Abstract

A coordinate-system called $\lambda$-lengths is constructed for an SL$(2,{\Bbb C})$ representation space of punctured surface groups. These $\lambda$-lengths can be considered as complexification of R. C. Penner's $\lambda$-lengths for decorated Teichmüller spaces of punctured surfaces. Via the coordinates the mapping class group acts on the representation space as a group of rational transformations. This fact is applied to find hyperbolic 3-manifolds which fibre over the circle.

Type
Notes and Papers
Copyright
The London Mathematical Society 2004

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Footnotes

Partially supported by Grant-in-Aid for Scientific Research (13440045), Ministry of Education, Science and Culture of Japan.