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arXiv · 2603.25392

Poly-Bernoulli numbers from shifted log-sine integrals

Toshiki Matsusaka
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Abstract

In 1999, Arakawa and Kaneko introduced a zeta function whose special values at negative integers yield the poly-Bernoulli numbers and investigated its relation to multiple zeta values. Since the poly-Bernoulli numbers appear in this function essentially by design, it is natural to ask whether they arise as special values of more intrinsic zeta-type objects. In this article, we show that a shifted log-sine integral provides such an example. Its analytically continued values at negative integers are given by anti-diagonal sums of poly-Bernoulli numbers with negative index.

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Toshiki Matsusaka. 2026-03-26. Poly-Bernoulli numbers from shifted log-sine integrals. https://arxiv.org/abs/2603.25392

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