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The hole probability for Gaussian entire functions. (English) Zbl 1260.60104

The probability \(\operatorname{P}_H(r)\) of the event that a function \(f\) has no zeros in the disc \(\{|z| < r\}\) is called the hole probability. This paper is concerned with a random entire function \[ f(z) = \sum\limits_{n = 0}^\infty {{\phi _n}{a_n}{z^n}}, \] where the \(\phi_n\) are independent standard complex Gaussian coefficients, and the \(a_n\) are positive constants, which satisfy \[ \mathop {\lim }\limits_{x \to \infty }\frac{\log {a_n}}{n} = - \infty. \] When \(r\) grows to infinity, the decay rate of the hole probability is studied. The author continues the work started in [Int. Math. Res. Not. 2010, No. 15, 2925–2946 (2010; Zbl 1204.60043)], using the classical Wiman-Valirom theory of the growth of power series. Assuming that the sequence \(a_n\) is logarithmically concave, upper and lower bounds for \(\operatorname{P}_H(r)\) are found which help in proving the main result about hole probability (Theorems 1 and 2).

MSC:

60G99 Stochastic processes
30D15 Special classes of entire functions of one complex variable and growth estimates

Citations:

Zbl 1204.60043

References:

[1] W. K. Hayman, The local growth of power series: a survey of the Wiman-Valiron method, Canadian Mathematical Bulletin 17 (1974), 317–358. · Zbl 0314.30021 · doi:10.4153/CMB-1974-064-0
[2] W. K. Hayman, Subharmonic Functions, Vol. 2, London Mathematical Society Monographs 20, Academic Press, London, 1989. · Zbl 0699.31001
[3] A. Nishry, Asymptotics of the hole probability for zeros of random entire functions, International Mathematics Research Notices IMRN 2010, (2010), no. 15, 2925–2946. · Zbl 1204.60043
[4] M. Sodin, Zeros of Gaussian analytic functions, Mathematical Research Letters 7 (2000), 371–381. · Zbl 0986.60065 · doi:10.4310/MRL.2000.v7.n4.a2
[5] M. Sodin and B. Tsirelson, Random complex zeroes. III. Decay of the hole probability, Israel Journal of Mathematics 147 (2005), 371–379. · Zbl 1130.60308 · doi:10.1007/BF02785373
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