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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Hammersley, J.M.: The zeros of a random polynomial. In: Neyman, J. (ed.) Proceedings of the Third Berkeley Symposium on Mathematics, Statistics and Probability, pp. 89–111. University of California Press, Berkley (1956)
Ibragimov, I.A., Maslova, N.B.: The mean number of real zeros of random polynomials I. Coefficients with a nonzero mean. Teor. Veroyatnost. i Primenen. 16, 495–503 (1971)
Ibragimov, I.A.; Maslova, N.B.: The mean number of real zeros of random polynomials II. Coefficients with a nonzero mean. Teor. Veroyatnost. i Primenen. 16, 495–503 (1971)
Ibragimov, I.A., Maslova, N.B.: On the average number of real roots of random polynomials. Dokl. Akad. Nauk SSSR 199, 1004–1008 (1971)
Ibragimov, I., Zeitouni, O.: On roots of random polynomials. Trans. Am. Math. Soc. 349, 2427–2441 (1997)
Kac, M.: On the average number of real roots of a random algebraic equation. Bull. Am. Math. Soc. 49, 314–320 (1943)
Kuipers, L., Niederreiter, H.: Uniform Distribution of Sequences. Wiley, New York (1974)
Kurosh, A.: Higher Algebra. Mir, Moscow (1988)
Logan, B.F., Shepp, L.A.: Real zeros of random polynomials. Proc. Lond. Math. Soc. 18, 29–35 (1968)
Logan, B.F., Shepp, L.A.: Real zeros of random polynomials II. Proc. Lond. Math. Soc. 18, 308–314 (1968)
Markushevich, A.I.: The Theory of Analytic Functions: A Brief Course. Mir, Moscow (1983)
Petrov, V.V.: Limit Theorems of Probability Theory: Sequences of Independent Random Variables. Clarendon, Oxford (1995)
Rogozin, B.A.: On the increase of dispersion of sums of independent random variables. Teor. Veroyatnost. i Primenen. 6, 106–108 (1961)
Shepp, L., Farahmand, K.: Expected number of real zeros of a random polynomial with independent identically distributed symmetric long-tailed coefficients. Teor. Veroyatnost. i Primenen. 55, 196–204 (2010)
Shepp, L., Vanderbei, R.J.: The complex zeros of random polynomials. Trans. Am. Math. Soc. 347, 4365–4383 (1995)
Shparo, D. I., Shur, M. G.: On distribution of zeros of random polynomials. Vestnik Moskov. Univ. Ser. I Mat. Mekh. 3, 40–43 (1962)
Zaporozhets, D.N.: An example of a random polynomial with unusual behavior of roots. Teor. Veroyatnost. i Primenen. 50, 549–555 (2005)
Zaporozhets, D.N., Nazarov, A.I.: What is the least expected number of real roots of a random polynomial? Teor. Veroyatnost. i Primenen. 53, 40–58 (2008)
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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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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DOI: https://doi.org/10.1007/978-3-642-33549-5_18
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