TY - JOUR A1 - Tongsomporn, Janyarak A1 - Wananiyakul, Saeree A1 - Steuding, Jörn T1 - The values of the periodic zeta-function at the nontrivial zeros of Riemann's zeta-function JF - Symmetry N2 - In this paper, we prove an asymptotic formula for the sum of the values of the periodic zeta-function at the nontrivial zeros of the Riemann zeta-function (up to some height) which are symmetrical on the real line and the critical line. This is an extension of the previous results due to Garunkštis, Kalpokas, and, more recently, Sowa. Whereas Sowa's approach was assuming the yet unproved Riemann hypothesis, our result holds unconditionally. KW - zeta-functions KW - Riemann hypothesis Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-252261 SN - 2073-8994 VL - 13 IS - 12 ER -