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The value distribution of random analytic functions on the unit disk

  • H. LI,
  • Z. Ye

摘要

We study the value distributions of the random analytic functions on the unit disk of the form \(f_\omega(z)= \sum _{j=0}^{\infty}\chi_j(\omega) a_j z^j,\) f ω ( z ) = j = 0 χ j ( ω ) a j z j , where \(a_j\in\mathbb{C}\) a j C and \(\chi_j(\omega)\) χ j ( ω ) are independent and identically distributed random variables defined on a probability space \((\Omega, \mathcal{F}, \mu)\) ( Ω , F , μ ) . Some of the theorems complement the work in [6], which deals with random entire functions.We first define a family of random analytic functions in the above form, which includes Gaussian, Rademacher, and Steinhaus analytic functions. Then we prove the relationship between the integrated counting function \(N(r, a, f_\omega)\) N ( r , a , f ω ) and the \(L_2\) L 2 norm of \(f\) f on the circle \(|z|=r\) | z | = r as \(r\) r is close to \(1\) 1 . As a by-product, we obtain Nevanlinna's second main theorem on the unit disk. Finally, we show theorems on the maximum modulus of \(f\) f and \(f_\omega\) f ω on the unit disk.