The q-Borel Sum of Divergent Basic Hypergeometric Series ᵣφₛ(a; b; q, x)

We study the divergent basic hypergeometric series, which is a q-analog of divergent hypergeometric series. This series formally satisfies the linear q-difference equation. In this paper, for that equation, we give an actual solution which admits basic hypergeometric series as a q-Gevrey asymptotic...

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Veröffentlicht in:Symmetry, Integrability and Geometry: Methods and Applications
Datum:2019
1. Verfasser: Adachi, S.
Format: Artikel
Sprache:English
Veröffentlicht: Інститут математики НАН України 2019
Online Zugang:https://nasplib.isofts.kiev.ua/handle/123456789/210059
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Zitieren:The q-Borel Sum of Divergent Basic Hypergeometric Series ᵣφₛ(a; b; q, x) / S. Adachi // Symmetry, Integrability and Geometry: Methods and Applications. — 2019. — Т. 15. — Бібліогр.: 14 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
id nasplib_isofts_kiev_ua-123456789-210059
record_format dspace
spelling Adachi, S.
2025-12-02T09:31:56Z
2019
The q-Borel Sum of Divergent Basic Hypergeometric Series ᵣφₛ(a; b; q, x) / S. Adachi // Symmetry, Integrability and Geometry: Methods and Applications. — 2019. — Т. 15. — Бібліогр.: 14 назв. — англ.
1815-0659
2010 Mathematics Subject Classification: 33D15; 39A13; 34M30
arXiv: 1806.05375
https://nasplib.isofts.kiev.ua/handle/123456789/210059
https://doi.org/10.3842/SIGMA.2019.016
We study the divergent basic hypergeometric series, which is a q-analog of divergent hypergeometric series. This series formally satisfies the linear q-difference equation. In this paper, for that equation, we give an actual solution which admits basic hypergeometric series as a q-Gevrey asymptotic expansion. Such an actual solution is obtained by using q-Borel summability, which is a q-analog of Borel summability. Our result shows a q-analog of the Stokes phenomenon. Additionally, we show that letting q→1 in our result gives the Borel sum of classical hypergeometric series. The same problem was already considered by Dreyfus, but we note that our result is remarkably different from his.
The author would like to thank the referees for their helpful suggestions and valuable comments. Additionally, the author is grateful that one of the referees let him know the existence of the papers [5] and [11].
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Інститут математики НАН України
Symmetry, Integrability and Geometry: Methods and Applications
The q-Borel Sum of Divergent Basic Hypergeometric Series ᵣφₛ(a; b; q, x)
Article
published earlier
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
title The q-Borel Sum of Divergent Basic Hypergeometric Series ᵣφₛ(a; b; q, x)
spellingShingle The q-Borel Sum of Divergent Basic Hypergeometric Series ᵣφₛ(a; b; q, x)
Adachi, S.
title_short The q-Borel Sum of Divergent Basic Hypergeometric Series ᵣφₛ(a; b; q, x)
title_full The q-Borel Sum of Divergent Basic Hypergeometric Series ᵣφₛ(a; b; q, x)
title_fullStr The q-Borel Sum of Divergent Basic Hypergeometric Series ᵣφₛ(a; b; q, x)
title_full_unstemmed The q-Borel Sum of Divergent Basic Hypergeometric Series ᵣφₛ(a; b; q, x)
title_sort q-borel sum of divergent basic hypergeometric series ᵣφₛ(a; b; q, x)
author Adachi, S.
author_facet Adachi, S.
publishDate 2019
language English
container_title Symmetry, Integrability and Geometry: Methods and Applications
publisher Інститут математики НАН України
format Article
description We study the divergent basic hypergeometric series, which is a q-analog of divergent hypergeometric series. This series formally satisfies the linear q-difference equation. In this paper, for that equation, we give an actual solution which admits basic hypergeometric series as a q-Gevrey asymptotic expansion. Such an actual solution is obtained by using q-Borel summability, which is a q-analog of Borel summability. Our result shows a q-analog of the Stokes phenomenon. Additionally, we show that letting q→1 in our result gives the Borel sum of classical hypergeometric series. The same problem was already considered by Dreyfus, but we note that our result is remarkably different from his.
issn 1815-0659
url https://nasplib.isofts.kiev.ua/handle/123456789/210059
citation_txt The q-Borel Sum of Divergent Basic Hypergeometric Series ᵣφₛ(a; b; q, x) / S. Adachi // Symmetry, Integrability and Geometry: Methods and Applications. — 2019. — Т. 15. — Бібліогр.: 14 назв. — англ.
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