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On Distribution of Zeros of Random Polynomials in Complex Plane

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Part of the book series: Springer Proceedings in Mathematics & Statistics ((PROMS,volume 33))

Abstract

Let \(G_{n}(z) = \xi _{0} + \xi _{1}z + \cdots + \xi _{n}{z}^{n}\) be a random polynomial with i.i.d. coefficients (real or complex). We show that the arguments of the roots of G n (z) are uniformly distributed in [0, 2π] asymptotically as \(n\,\rightarrow \,\infty \). We also prove that the condition \(\mathbf{E}\,\ln (1 + \vert \xi _{0}\vert )\,<\,\infty \) is necessary and sufficient for the roots to asymptotically concentrate near the unit circumference.

Mathematics Subject Classification (2010): 60-XX, 30C15

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Acknowledgements

A part of the work was done in the University of Bielefeld. The authors thank F. Götze for the possibility to participate at the work of CRC 701 “Spectral Structures and Topological Methods in Mathematics”. They are also grateful to A. Cole for her hospitality.

This work was partially supported by RFBR (08-01-00692, 10-01-00242), RFBR-DFG (09-0191331), NSh-4472.2010.1, and CRC 701 “Spectral Structures and Topological Methods in Mathematics”

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Correspondence to Ildar Ibragimov .

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Ibragimov, I., Zaporozhets, D. (2013). On Distribution of Zeros of Random Polynomials in Complex Plane. In: Shiryaev, A., Varadhan, S., Presman, E. (eds) Prokhorov and Contemporary Probability Theory. Springer Proceedings in Mathematics & Statistics, vol 33. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-33549-5_18

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