Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao manuscripta mathemat...arrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
manuscripta mathematica
Article . 1993 . Peer-reviewed
License: Springer TDM
Data sources: Crossref
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
zbMATH Open
Article . 1993
Data sources: zbMATH Open
versions View all 2 versions
addClaim

On irrationality measures of the values of Gauss hypergeometric function

On irrationality measures on the values of Gauss hypergeometric function
Authors: Heimonen, Ari; Matala-aho, Tapani; Väänänen, Keijo;

On irrationality measures of the values of Gauss hypergeometric function

Abstract

Sei \(F(z)\) die spezielle Gaußsche hypergeometrische Funktion \(\sum_{n\geq 0} ((b)_ n/ (c)_ n) z^ n\), wobei \((a)_ n:= a(a+1) \dots (a+n-1)\) für \(n\geq 0\) definiert und \(-c\neq 0,1,\dots\) vorausgesetzt sei. Sind nun \(b\), \(c\) rationale Parameter, so sind Irrationalität und lineare Unabhängigkeit von Werten von \(F\) an rationalen Argumentstellen in qualitativer und quantitativer Hinsicht bereits in zahlreichen Publikationen untersucht worden. In der vorliegenden Arbeit beweisen Verff. (via Padé-Approximation) zunächst ein Irrationalitätsmaß für \(F(q)\) für gewisse rationale \(q\) sowohl im archimedischen wie im \(p\)-adischen Fall. Diese allgemeinen Resultate können in vielen Spezialfällen von \(b\), \(c\) durch sorgfältiges Studium der arithmetischen Eigenschaften der (rationalen) Koeffizienten der Approximationspolynome verbessert werden. Diese Idee wurde zuerst von \textit{G. V. Chudnovsky} [Ann. Math., II. Ser. 117, 325-382 (1983; Zbl 0518.10038)] bei der Binomialfunktion und dann auch von anderen Autoren angewandt. Verff. leiten hier ein allgemeines Kriterium zur Auffindung eines gemeinsamen Teilers aller Koeffizienten ihrer Approximationspolynome her und wenden dieses dann auf die Logarithmus-Funktion an, um Ergebnisse von \textit{E. A. Rukhadze} [Vestn. Mosk. Univ., Ser. I, Mat. Mekh. 1987, No. 6, 25-29 (1987; Zbl 0635.10025)] zu verschärfen.

Related Organizations
Keywords

Approximation in non-Archimedean valuations, irrationality measures, \(p\)-adic valuation, values of Gauss hypergeometric function, Measures of irrationality and of transcendence, Padé approximation

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    14
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
Powered by OpenAIRE graph
Found an issue? Give us feedback
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
14
Average
Top 10%
Average
Related to Research communities
Upload OA version
Are you the author of this publication? Upload your Open Access version to Zenodo!
It’s fast and easy, just two clicks!