Twisted traces of modular functions on hyperbolic 3-space.

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Title: Twisted traces of modular functions on hyperbolic 3-space.
Authors: Herrero, S.1,2 (AUTHOR) sebastian.herrero.m@gmail.com, Imamoḡlu, Ö.2 (AUTHOR) ozlem@math.ethz.ch, von Pippich, A.-M.3 (AUTHOR) anna.pippich@uni-konstanz.de, Schwagenscheidt, M.2 (AUTHOR) mschwagen@ethz.ch
Source: Journal of Number Theory. Feb2026, Vol. 279, p154-169. 16p.
Subjects: Modular functions, Eisenstein series, Harmonic functions, Hyperbolic spaces, Mathematical functions, Fourier analysis, Dirichlet series
Abstract: We compute analogues of twisted traces of CM values of harmonic modular functions on hyperbolic 3-space and show that they are essentially given by Fourier coefficients of the j -invariant. From this we deduce that the twisted traces of these harmonic modular functions are integers. Additionally, we compute the twisted traces of Eisenstein series on hyperbolic 3-space in terms of Dirichlet L -functions and divisor sums. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Number Theory is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Twisted traces of modular functions on hyperbolic 3-space.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Number+Theory%22">Journal of Number Theory</searchLink>. Feb2026, Vol. 279, p154-169. 16p.
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  Data: <searchLink fieldCode="DE" term="%22Modular+functions%22">Modular functions</searchLink><br /><searchLink fieldCode="DE" term="%22Eisenstein+series%22">Eisenstein series</searchLink><br /><searchLink fieldCode="DE" term="%22Harmonic+functions%22">Harmonic functions</searchLink><br /><searchLink fieldCode="DE" term="%22Hyperbolic+spaces%22">Hyperbolic spaces</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+functions%22">Mathematical functions</searchLink><br /><searchLink fieldCode="DE" term="%22Fourier+analysis%22">Fourier analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Dirichlet+series%22">Dirichlet series</searchLink>
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  Data: We compute analogues of twisted traces of CM values of harmonic modular functions on hyperbolic 3-space and show that they are essentially given by Fourier coefficients of the j -invariant. From this we deduce that the twisted traces of these harmonic modular functions are integers. Additionally, we compute the twisted traces of Eisenstein series on hyperbolic 3-space in terms of Dirichlet L -functions and divisor sums. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Number Theory is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.jnt.2025.06.010
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 16
        StartPage: 154
    Subjects:
      – SubjectFull: Modular functions
        Type: general
      – SubjectFull: Eisenstein series
        Type: general
      – SubjectFull: Harmonic functions
        Type: general
      – SubjectFull: Hyperbolic spaces
        Type: general
      – SubjectFull: Mathematical functions
        Type: general
      – SubjectFull: Fourier analysis
        Type: general
      – SubjectFull: Dirichlet series
        Type: general
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      – TitleFull: Twisted traces of modular functions on hyperbolic 3-space.
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            NameFull: Imamoḡlu, Ö.
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            NameFull: von Pippich, A.-M.
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            NameFull: Schwagenscheidt, M.
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            – D: 01
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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              Value: 279
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