Publications Meetings The Profession Membership Programs Math Samplings Policy & Advocacy In the News About the AMS

   
Mobile Device Pairing
Green Open Access
Transactions of the American Mathematical Society
Transactions of the American Mathematical Society
ISSN 1088-6850(online) ISSN 0002-9947(print)

 

Rational approximations to the dilogarithm


Author: Masayoshi Hata
Journal: Trans. Amer. Math. Soc. 336 (1993), 363-387
MSC: Primary 11J82; Secondary 11J72
MathSciNet review: 1147401
Full-text PDF Free Access

Abstract | References | Similar Articles | Additional Information

Abstract: The irrationality proof of the values of the dilogarithmic function $ {L_2}(z)$ at rational points $ z = 1/k$ for every integer $ k \in ( - \infty , - 5] \cup [7,\infty )$ is given. To show this we develop the method of Padé-type approximations using Legendre-type polynomials, which also derives good irrationality measures of $ {L_2}(1/k)$. Moreover, the linear independence over $ {\mathbf{Q}}$ of the numbers $ 1$, $ \log (1 - 1/k)$, and $ {L_2}(1/k)$ is also obtained for each integer $ k \in ( - \infty , - 5] \cup [7,\infty )$ .


References [Enhancements On Off] (What's this?)


Similar Articles

Retrieve articles in Transactions of the American Mathematical Society with MSC: 11J82, 11J72

Retrieve articles in all journals with MSC: 11J82, 11J72


Additional Information

DOI: http://dx.doi.org/10.1090/S0002-9947-1993-1147401-5
PII: S 0002-9947(1993)1147401-5
Keywords: Dilogarithm, irrationality measure, Padé approximation
Article copyright: © Copyright 1993 American Mathematical Society