Dergiler / Turkish Journal of Mathematics / 2010 / Cilt: 34 - Sayı: 4

Number of pseudo--Anosov elements in the mapping class group of a four--holed sphere

Sayfa
585–592
Yayın Tarihi
2010-04-01
DOI
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

We prove that the ratio of the number of pseudo-Anosov elements to that of all elements in a ball with center at the identity tends to one as the radius of the ball tends to infinity.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:We compute the growth series and the growth functions of reducible and pseudo-Anosov elements of the pure mapping class group of the sphere with four holes with respect to a certain generating set.
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Temel Bulgular & Veri:We compute the growth series and the growth functions of reducible and pseudo-Anosov elements of the pure mapping class group of the sphere with four holes with respect to a certain generating set.
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Sonuç & Katkı:We prove that the ratio of the number of pseudo-Anosov elements to that of all elements in a ball with center at the identity tends to one as the radius of the ball tends to infinity.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Mapping class group · growth series · growth functions

Özet

We compute the growth series and the growth functions of reducible and pseudo-Anosov elements of the pure mapping class group of the sphere with four holes with respect to a certain generating set. We prove that the ratio of the number of pseudo-Anosov elements to that of all elements in a ball with center at the identity tends to one as the radius of the ball tends to infinity.

Abstract

We compute the growth series and the growth functions of reducible and pseudo-Anosov elements of the pure mapping class group of the sphere with four holes with respect to a certain generating set. We prove that the ratio of the number of pseudo-Anosov elements to that of all elements in a ball with center at the identity tends to one as the radius of the ball tends to infinity.

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Bu Makaleye Atıf Yap

ATALAN, F. (2010). Number of pseudo--Anosov elements in the mapping class group of a four--holed sphere. Turkish Journal of Mathematics, Cilt: 34 - Sayı: 4, 585–592. https://ajindex.com/articles/723362

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Kaynakça (7)

  1. Casson, A.]. and Bleiler, S.A.: Automorphisms of Surfaces After Nielsen and Thurston, Cambridge University Press 1988.
  2. Farb, B.: Some problems on mapping class groups and moduli space in ”Problems on Mapping Class Groups and Related Topics”, ed. by B. Farb, Proc. Symp. Pure and Applied Math. 74, 11-55 2006.
  3. Harpe, P.: Topics in Geometric Group Theory, The University of Chicago Press, Chicago 2000.
  4. Ivanov, N.V.: Automorphisms of Teichmüller modular groups, Lecture Notes in Math., Springer, Berlin, 1346, 199-270 1988.
  5. Maher, J.: Random walks on the mapping class group, arXiv.math/0604433. Rivin, I.: Walks on groups, counting reducible matrices, polynomials, and surface and free group automorphims, Duke Math.J. 142(2), 353—379 (2008).
  6. Takasawa, M.: Enumeration of Mapping Classes for the Torus, Geometriae Dedicata 85, 11-19 (2001). Ferihe ATALAN Received 27.01.2009
  7. Department of Mathematics, Atilim University, 06836 Ankara-TURKEY e—mail: fatalan©atilim.edu.tr Mustafa KORKMAZ Department of Mathematics, Middle East Technical University, 06531 Ankara-TURKEY e—mail: korkmaz©metu.edu.tr