Dynamics and geometry of the Rauzy-Veech induction for quadratic differentials

Details Dynamics and geometry of the Rauzy-Veech induction for quadratic differentials Dynamics and geometry of the Rauzy-Veech induction for quadratic differentials

2007-10-30

arxiv.org/abs/0710.5614v2

Mathematics

Geometric Topology

50 pages, 16 figures. References added, minor corrections. Paper submitted

Scientific paper

Interval exchange maps are related to geodesic flows on translation surfaces; they correspond to the first return maps of the vertical flow on a transverse segment. The Rauzy-Veech induction on the space of interval exchange maps provides a powerful tool to analyze the Teichmueller geodesic flow on the moduli space of Abelian differentials. Several major results have been proved using this renormalization. Danthony and Nogueira introduced in 1988 a natural generalization of interval exchange transformations, namely the linear involutions. These maps are related to general measured foliations on surfaces (orientable or not). In this paper we are interested by such maps related to geodesic flow on (orientable) flat surfaces with Z/2Z linear holonomy. We relate geometry and dynamics of such maps to the combinatorics of generalized permutations. We study an analogue of the Rauzy-Veech induction and give an efficient combinatorial characterization of its attractors. We establish a natural bijection between the extended Rauzy classes of generalized permutations and connected components of the strata of meromorphic quadratic differentials with at most simple poles, which allows, in particular, to classify the connected components of all exceptional strata.

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