LITHUANIAN MATHEMATICAL JOURNAL, cilt.61, sa.2, ss.180-198, 2021 (SCI-Expanded)
In this paper, we demonstrate a character analogue of the Lerch formula and multiplication formulas for the Dirichlet L-functions. These formulas produce multiplication formulas for the character gamma functions and related polynomials. Moreover, we establish closed-form evaluation formulas for the power series with Dirichlet L-value coefficients.