English

On some series connected with Riemann zeta function

Classical Analysis and ODEs 2017-07-14 v1 Number Theory

Abstract

Using properties of the Riemann zeta-function we propose two new large classes of evaluated series. Incidentally the first class represents integrals as generalized average on very nonuniform sequences. The second class contains inter alia a lot of new series with the Jacoby theta-functions and rationals of the exponential function. Moreover we propose many functions that can replace the Riemann zeta-function in similar constructions. Two examples: 1) if f(x)f(x) has period 1 and is in some Lipschitz class, we have for any natural M>1M>1 lnM01f(x)dx=n1k=1M1[1Mnkf(ln(Mnk)lnM)1Mnf(ln(Mn)lnM)], \ln M\cdot\int_0^1f(x)dx = \sum_{n\geq 1} \sum_{k=1}^{M-1}\left[\frac{1}{Mn-k}f\left(\frac{\ln (Mn-k)}{\ln M}\right)-\frac{1}{Mn} f\left(\frac{\ln (Mn)}{\ln M}\right)\right], 2) if φJ,M,N(w)=(1)J(dJdwJ)(NeNw1M(eMw1),\varphi_{J,M,N}(w) = (-1)^J\left(\frac{d^J}{dw^J}\right)\left(\frac{N}{e^{Nw}-1}-\frac{M}{(e^{Mw}-1}\right), where J,M,NJ,M,N are integer, M>N>1,M>N>1, J0J\geq 0 and for all nZn\in\mathbb{Z}, (eM(M/N)n+w1)(eN(M/N)n+w1)0,\left(e^{M\left(M/N\right)^{n+w}} - 1\right) \left(e^{N\left(M/N\right)^{n+w}} -1 \right) \neq 0, we have nZ(M/N)(J+1)(n+w)φJ,M,N((M/N)n+w)=J!. \sum_{n\in\mathbb{Z}}(M/N)^{(J+1)(n+w)} \varphi_{J,M,N}((M/N)^{n+w})=J!.

Keywords

Cite

@article{arxiv.1707.04190,
  title  = {On some series connected with Riemann zeta function},
  author = {V. E. Shestopal},
  journal= {arXiv preprint arXiv:1707.04190},
  year   = {2017}
}

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in Russian

R2 v1 2026-06-22T20:46:08.607Z