Abstract
| - Summary. The Poisson summation formula is employed to find the Laurent expansions of the Dirichlet seriesF(s, c) = Σn = 0∞ exp[−(n + c)1/2s] andG(s, c) = Σn = 0∞(−1)n exp[−(n + c)1/2s] (0⩽c<1) abouts = 0. The Laurent expansions ofF(s, c) andG(s, c) are convergent respectively for 0 < |s| < ∞ and |s| < ∞, and define the analytic continuation of the Dirichlet series to the half-plane Res< 0.
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