Knots and Their Related -Series

We discuss a matrix of periodic holomorphic functions in the upper and lower half-plane, which can be obtained from a factorization of an Andersen-Kashaev state integral of a knot complement with remarkable analytic and asymptotic properties that define a PSL₂(ℤ)-cocycle on the space of matrix-value...

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Veröffentlicht in:Symmetry, Integrability and Geometry: Methods and Applications
Datum:2023
Hauptverfasser: Garoufalidis, Stavros, Zagier, Don
Format: Artikel
Sprache:Englisch
Veröffentlicht: Інститут математики НАН України 2023
Online Zugang:https://nasplib.isofts.kiev.ua/handle/123456789/212049
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Zitieren:Knots and Their Related -Series. Stavros Garoufalidis and Don Zagier. SIGMA 19 (2023), 082, 39 pages

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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author Garoufalidis, Stavros
Zagier, Don
author_facet Garoufalidis, Stavros
Zagier, Don
citation_txt Knots and Their Related -Series. Stavros Garoufalidis and Don Zagier. SIGMA 19 (2023), 082, 39 pages
collection DSpace DC
container_title Symmetry, Integrability and Geometry: Methods and Applications
description We discuss a matrix of periodic holomorphic functions in the upper and lower half-plane, which can be obtained from a factorization of an Andersen-Kashaev state integral of a knot complement with remarkable analytic and asymptotic properties that define a PSL₂(ℤ)-cocycle on the space of matrix-valued piecewise analytic functions on the real numbers. We identify the corresponding cocycle with the one coming from the Kashaev invariant of a knot (and its matrix-valued extension) via the refined quantum modularity conjecture of [arXiv:2111.06645] and also relate the matrix-valued invariant with the 3D-index of Dimofte-Gaiotto-Gukov. The cocycle also has an analytic extendability property that leads to the notion of a matrix-valued holomorphic quantum modular form. This is a tale of several independent discoveries, both empirical and theoretical, all illustrated by the three simplest hyperbolic knots.
first_indexed 2026-03-19T02:17:01Z
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institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
issn 1815-0659
language English
last_indexed 2026-03-19T02:17:01Z
publishDate 2023
publisher Інститут математики НАН України
record_format dspace
spelling Garoufalidis, Stavros
Zagier, Don
2026-01-23T10:12:48Z
2023
Knots and Their Related -Series. Stavros Garoufalidis and Don Zagier. SIGMA 19 (2023), 082, 39 pages
1815-0659
2020 Mathematics Subject Classification: 57N10; 57K16; 57K14; 57K10
arXiv:2304.09377
https://nasplib.isofts.kiev.ua/handle/123456789/212049
https://doi.org/10.3842/SIGMA.2023.082
We discuss a matrix of periodic holomorphic functions in the upper and lower half-plane, which can be obtained from a factorization of an Andersen-Kashaev state integral of a knot complement with remarkable analytic and asymptotic properties that define a PSL₂(ℤ)-cocycle on the space of matrix-valued piecewise analytic functions on the real numbers. We identify the corresponding cocycle with the one coming from the Kashaev invariant of a knot (and its matrix-valued extension) via the refined quantum modularity conjecture of [arXiv:2111.06645] and also relate the matrix-valued invariant with the 3D-index of Dimofte-Gaiotto-Gukov. The cocycle also has an analytic extendability property that leads to the notion of a matrix-valued holomorphic quantum modular form. This is a tale of several independent discoveries, both empirical and theoretical, all illustrated by the three simplest hyperbolic knots.
The authors would like to thank Tudor Dimofte, Gie Gu, Rinat Kashaev, Marcos Marino, and Sander Zwegers for their input and the anonymous referees for a careful reading of the manuscript.
en
Інститут математики НАН України
Symmetry, Integrability and Geometry: Methods and Applications
Knots and Their Related -Series
Article
published earlier
spellingShingle Knots and Their Related -Series
Garoufalidis, Stavros
Zagier, Don
title Knots and Their Related -Series
title_full Knots and Their Related -Series
title_fullStr Knots and Their Related -Series
title_full_unstemmed Knots and Their Related -Series
title_short Knots and Their Related -Series
title_sort knots and their related -series
url https://nasplib.isofts.kiev.ua/handle/123456789/212049
work_keys_str_mv AT garoufalidisstavros knotsandtheirrelatedseries
AT zagierdon knotsandtheirrelatedseries