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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 2020 MCQ for Transactions of the American Mathematical Society is 1.48.

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On the topological 4-genus of torus knots
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by S. Baader, P. Feller, L. Lewark and L. Liechti PDF
Trans. Amer. Math. Soc. 370 (2018), 2639-2656

Abstract:

We prove that the topological locally flat slice genus of large torus knots takes up less than three quarters of the ordinary genus. As an application, we derive the best possible linear estimate of the topological slice genus for torus knots with non-maximal signature invariant.
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Additional Information
  • S. Baader
  • Affiliation: Mathematisches Institut, Universität Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
  • MR Author ID: 757518
  • Email: sebastian.baader@math.unibe.ch
  • P. Feller
  • Affiliation: Department of Mathematics, Boston College, Maloney Hall, Chestnut Hill, Massachusetts 02467
  • Address at time of publication: ETH Zürich, Rämistrasse 101, 8092 Zürich, Switzerland
  • MR Author ID: 1052130
  • Email: peter.feller@math.ch
  • L. Lewark
  • Affiliation: Mathematisches Institut, Universität Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
  • MR Author ID: 1064492
  • Email: lukas.lewark@math.unibe.ch
  • L. Liechti
  • Affiliation: Mathematisches Institut, Universität Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
  • MR Author ID: 1151402
  • Email: livio.liechti@math.unibe.ch
  • Received by editor(s): October 19, 2015
  • Received by editor(s) in revised form: June 20, 2016, and August 2, 2016
  • Published electronically: December 19, 2017
  • Additional Notes: The third author thanks the EPSRC grant EP/K00591X/1 for providing computing facilities
    The second, third and fourth authors gratefully acknowledge support by the SNSF grants 155477 and 159208, respectively
  • © Copyright 2017 by the authors
  • Journal: Trans. Amer. Math. Soc. 370 (2018), 2639-2656
  • MSC (2010): Primary 57M25
  • DOI: https://doi.org/10.1090/tran/7051
  • MathSciNet review: 3748580