Abstract
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We construct ribbon surfaces of Euler characteristic one for several infinite families of
alternating 3-braid closures. We also use a twisted Alexander polynomial obstruction
to conclude the classification of smoothly slice knots which are closures of alternating
3-braids with up to 20 crossings.
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Keywords
3-braids, slice-ribbon conjecture, twisted Alexander
polynomials
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Mathematical Subject Classification
Primary: 57K10, 57K14
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Milestones
Received: 9 June 2022
Accepted: 13 September 2022
Published: 22 June 2023
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© 2023 The Author(s), under
exclusive license to MSP (Mathematical Sciences Publishers).
Distributed under the Creative Commons
Attribution License 4.0 (CC BY). |
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