Evaluation formulas for the Tornheim and Euler-type double series


Çay E., CAN M., KARGIN L.

Hacettepe Journal of Mathematics and Statistics, vol.53, no.4, pp.926-941, 2024 (SCI-Expanded, Scopus)

  • Publication Type: Article / Article
  • Volume: 53 Issue: 4
  • Publication Date: 2024
  • Doi Number: 10.15672/hujms.1165578
  • Journal Name: Hacettepe Journal of Mathematics and Statistics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.926-941
  • Keywords: Bernoulli polynomial, Euler sum, Fourier series, Tornheim series, zeta function
  • Akdeniz University Affiliated: Yes

Abstract

We give closed-form evaluation formulas for the real and imaginary parts of the series ∑∞m,n=1 e2πi(mx−ny) mpnr q (mc+n), c ∈ N, in terms of certain zeta values. Particular choices of x and y lead to evaluation formulas for some Tornheim-type∑∞ 1 m,n=1 and Euler-type ∑∞m,n=1 1 np(mc+n)q double series and their alternating analogues. mpnr (mc+n)q.