Dyck’s surfaces, systoles, and capacities
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- by Mikhail G. Katz and Stéphane Sabourau PDF
- Trans. Amer. Math. Soc. 367 (2015), 4483-4504 Request permission
Abstract:
We prove an optimal systolic inequality for nonpositively curved Dyck’s surfaces. The extremal surface is flat with eight conical singularities, six of angle $\vartheta$ and two of angle $9 \pi -3 \vartheta$ for a suitable $\vartheta$ with $\cos (\vartheta )\in \mathbb {Q}(\sqrt {19})$. Relying on some delicate capacity estimates, we also show that the extremal surface is not conformally equivalent to the hyperbolic Dyck’s surface with maximal systole, yielding a first example of systolic extremality with this behavior.References
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Additional Information
- Mikhail G. Katz
- Affiliation: Department of Mathematics, Bar Ilan University, Ramat Gan 52900, Israel
- MR Author ID: 197211
- Email: katzmik@macs.biu.ac.il
- Stéphane Sabourau
- Affiliation: Laboratoire d’Analyse et Mathématiques Appliquées, Université Paris-Est Créteil, 61 Avenue du Général de Gaulle, 94010 Créteil, France
- Email: stephane.sabourau@u-pec.fr
- Received by editor(s): February 20, 2013
- Received by editor(s) in revised form: June 3, 2013, and January 6, 2014
- Published electronically: October 10, 2014
- © Copyright 2014 American Mathematical Society
- Journal: Trans. Amer. Math. Soc. 367 (2015), 4483-4504
- MSC (2010): Primary 53C23; Secondary 30F10, 58J60
- DOI: https://doi.org/10.1090/S0002-9947-2014-06216-8
- MathSciNet review: 3324936