Transactions of the American Mathematical Society

Published by the American Mathematical Society since 1900, Transactions of the American Mathematical Society is devoted to longer research articles in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2024 MCQ for Transactions of the American Mathematical Society is 1.48 .

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Large-scale geometry of the saddle connection graph
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by Valentina Disarlo, Huiping Pan, Anja Randecker and Robert Tang PDF
Trans. Amer. Math. Soc. 374 (2021), 8101-8129

Abstract:

We prove that the saddle connection graph associated to any half-translation surface is $4$–hyperbolic and uniformly quasi-isometric to the regular countably infinite-valent tree. Consequently, the saddle connection graph is not quasi-isometrically rigid. We also characterise its Gromov boundary as the set of straight foliations with no saddle connections. In our arguments, we give a generalisation of the unicorn paths in the arc graph which may be of independent interest.
References
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Additional Information
  • Valentina Disarlo
  • Affiliation: Mathematisches Institut, Universität Heidelberg, Im Neuenheimer Feld 205, 69120 Heidelberg, Germany
  • MR Author ID: 983316
  • Email: vdisarlo@mathi.uni-heidelberg.de
  • Huiping Pan
  • Affiliation: Department of Mathematics, Jinan University, 601 Huangpu Road, Tianhe, Guangzhou, Guangdong 510632, People’s Republic of China
  • MR Author ID: 1173565
  • ORCID: 0000-0001-9892-8074
  • Email: panhp@jnu.edu.cn
  • Anja Randecker
  • Affiliation: Mathematisches Institut, Universität Heidelberg, Im Neuenheimer Feld 205, 69120 Heidelberg, Germany
  • MR Author ID: 1284825
  • ORCID: 0000-0001-5991-4542
  • Email: randecker@mathi.uni-heidelberg.de
  • Robert Tang
  • Affiliation: Department of Pure Mathematics, Xi’an Jiaotong–Liverpool University, 111 Ren’ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, People’s Republic of China
  • MR Author ID: 1000078
  • ORCID: 0000-0001-7021-4117
  • Email: robert.tang@xjtlu.edu.cn
  • Received by editor(s): January 20, 2021
  • Received by editor(s) in revised form: March 15, 2021
  • Published electronically: August 18, 2021
  • Additional Notes: The first author acknowledges support from the Olympia Morata Habilitation Programme of Universität Heidelberg and from the European Research Council under ERC-Consolidator grant 614733 (GEOMETRICSTRUCTURES). The second author acknowledges the support of National Natural Science Foundation of China NSFC 11901241. The third author acknowledges the support of NYU-ECNU Institute of Mathematical Sciences at NYU Shanghai. The fourth author acknowledges support from a JSPS KAKENHI Grant-in-Aid for Early-Career Scientists (No. 19K14541)
  • © Copyright 2021 by the authors
  • Journal: Trans. Amer. Math. Soc. 374 (2021), 8101-8129
  • MSC (2020): Primary 57K20; Secondary 20F65, 53C10
  • DOI: https://doi.org/10.1090/tran/8448
  • MathSciNet review: 4328693