Uniform Convergence Behavior of the Bernoulli Polynomials

John Mangual

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arXiv · math/0703452

Uniform Convergence Behavior of the Bernoulli Polynomials

John Mangual

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Abstract

The roots of Bernoulli polynomials, $B_n(z)$, when plotted in the complex plane, accumulate around a peculiar H-shaped curve. Karl Dilcher proved in 1987 that, on compact subsets of $\mathbb{C}$, the Bernoulli polynomials asymptotically behave like sine or cosine. Here we establish the asmptotic behavior of $B_n(nz)$, compute the distribution of real roots of Bernoulli polynomials and show that, properly rescaled, the complex roots lie on the curve $e^{- 2π\text{Im}(z)} = 2πe |z|$ or $e^{2π\text{Im}(z)}= 2πe |z|$.

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John Mangual. 2007-03-15. Uniform Convergence Behavior of the Bernoulli Polynomials. https://arxiv.org/abs/math/0703452

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