Agol cycles of pseudo-Anosov maps on the 2-punctured torus and 5-punctured sphere

Jean-Baptiste Bellynck; Eiko Kin

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arXiv · 2409.16423

Agol cycles of pseudo-Anosov maps on the 2-punctured torus and 5-punctured sphere

Jean-Baptiste Bellynck·Eiko Kin

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Abstract

Given a periodic splitting sequence of a measured train track, an Agol cycle is the part that constitutes a period up to the action of a pseudo-Anosov map and the rescaling by its dilatation. We consider a family of pseudo-Anosov maps on the 2-punctured torus and on the 5-punctured sphere. We present measured train tracks and compute their Agol cycles. We give a condition under which two maps in the defined family are conjugate or not. In the process, we find a new formula for the dilatation.

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Jean-Baptiste Bellynck, Eiko Kin. 2024-09-24. Agol cycles of pseudo-Anosov maps on the 2-punctured torus and 5-punctured sphere. https://arxiv.org/abs/2409.16423

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