Asymptotic Formula for the Moments of the Takagi Function
- Authors: Timofeev E.A.1
-
Affiliations:
- Demidov Yaroslavl State University
- Issue: Vol 51, No 7 (2017)
- Pages: 731-735
- Section: Article
- URL: https://journals.rcsi.science/0146-4116/article/view/175380
- DOI: https://doi.org/10.3103/S0146411617070197
- ID: 175380
Cite item
Abstract
The Takagi function is a simple example of a continuous yet nowhere differentiable function and is given as T(x) = Σk=0∞ 2−n ρ(2nx), where \(\rho (x) = \mathop {\min }\limits_{k \in \mathbb{Z}} |x - k|\). The moments of the Takagi function are given as Mn = ∫01xnT(x)dx. The estimate \({M_n} = \frac{{1nn - \Gamma '(1) - 1n\pi }}{{{n^2}1n2}} + \frac{1}{{2{n^2}}} + \frac{2}{{{n^2}1n2}}\phi (n) + O({n^{ - 2.99}})\), where the function \(\phi (x) = \sum\nolimits_{k \ne 0} \Gamma (\frac{{2\pi ik}}{{1n2}})\zeta (\frac{{2\pi ik}}{{1n2}}){x^{ - \frac{{2\pi ik}}{{1n2}}}}\) is periodic in log2x and Γ(x) and ζ(x) denote the gamma and zeta functions, is the principal result of this work.
About the authors
E. A. Timofeev
Demidov Yaroslavl State University
Author for correspondence.
Email: timofeevea@gmail.com
Russian Federation, Yaroslavl, 150003