The Exponential Map for Hopf Algebras

We give an analogue of the classical exponential map on Lie groups for Hopf ∗-algebras with differential calculus. The major difference with the classical case is the interpretation of the value of the exponential map, classically an element of the Lie group. We give interpretations as states on the...

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Published in:Symmetry, Integrability and Geometry: Methods and Applications
Date:2022
Main Authors: Alhamzi, Ghaliah, Beggs, Edwin
Format: Article
Language:English
Published: Інститут математики НАН України 2022
Online Access:https://nasplib.isofts.kiev.ua/handle/123456789/211528
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:The Exponential Map for Hopf Algebras. Ghaliah Alhamzi and Edwin Beggs. SIGMA 18 (2022), 017, 17 pages

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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author Alhamzi, Ghaliah
Beggs, Edwin
author_facet Alhamzi, Ghaliah
Beggs, Edwin
citation_txt The Exponential Map for Hopf Algebras. Ghaliah Alhamzi and Edwin Beggs. SIGMA 18 (2022), 017, 17 pages
collection DSpace DC
container_title Symmetry, Integrability and Geometry: Methods and Applications
description We give an analogue of the classical exponential map on Lie groups for Hopf ∗-algebras with differential calculus. The major difference with the classical case is the interpretation of the value of the exponential map, classically an element of the Lie group. We give interpretations as states on the Hopf algebra, elements of a Hilbert ∗-bimodule of 1/2 densities, and elements of the dual Hopf algebra. We give examples for complex-valued functions on the groups ₃ and ℤ, Woronowicz's matrix quantum group ℂq[₂], and the Sweedler-Taft algebra.
first_indexed 2026-03-13T16:53:20Z
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institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
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last_indexed 2026-03-13T16:53:20Z
publishDate 2022
publisher Інститут математики НАН України
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spelling Alhamzi, Ghaliah
Beggs, Edwin
2026-01-05T12:26:18Z
2022
The Exponential Map for Hopf Algebras. Ghaliah Alhamzi and Edwin Beggs. SIGMA 18 (2022), 017, 17 pages
1815-0659
2020 Mathematics Subject Classification: 16T05; 46L87; 58B32
arXiv:2203.04549
https://nasplib.isofts.kiev.ua/handle/123456789/211528
https://doi.org/10.3842/SIGMA.2022.017
We give an analogue of the classical exponential map on Lie groups for Hopf ∗-algebras with differential calculus. The major difference with the classical case is the interpretation of the value of the exponential map, classically an element of the Lie group. We give interpretations as states on the Hopf algebra, elements of a Hilbert ∗-bimodule of 1/2 densities, and elements of the dual Hopf algebra. We give examples for complex-valued functions on the groups ₃ and ℤ, Woronowicz's matrix quantum group ℂq[₂], and the Sweedler-Taft algebra.
We would like to thank the editor and referees for many useful comments. Computer algebra and graphs were done on Mathematica.
en
Інститут математики НАН України
Symmetry, Integrability and Geometry: Methods and Applications
The Exponential Map for Hopf Algebras
Article
published earlier
spellingShingle The Exponential Map for Hopf Algebras
Alhamzi, Ghaliah
Beggs, Edwin
title The Exponential Map for Hopf Algebras
title_full The Exponential Map for Hopf Algebras
title_fullStr The Exponential Map for Hopf Algebras
title_full_unstemmed The Exponential Map for Hopf Algebras
title_short The Exponential Map for Hopf Algebras
title_sort exponential map for hopf algebras
url https://nasplib.isofts.kiev.ua/handle/123456789/211528
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