Non universality for the variance of the number of real roots of random trigonometric polynomials

V Bally, L Caramellino, G Poly - Probability Theory and Related Fields, 2019 - Springer
In this article, we consider the following family of random trigonometric polynomials p_n (t,
Y)= ∑ _ k= 1^ n Y_ k^ 1\cos (kt)+ Y_ k^ 2\sin (kt) pn (t, Y)=∑ k= 1 n Y k 1 cos (kt)+ Y k 2 sin …

Universality of the nodal length of bivariate random trigonometric polynomials

J Angst, VH Pham, G Poly - Transactions of the American Mathematical …, 2018 - ams.org
We consider random trigonometric polynomials of the form\[f_n (x, y)=\sum _ {1\le k, l\le n} a_
{k, l}\cos (kx)\cos (ly),\] where the entries $(a_ {k, l}) _ {k, l\ge 1} $ are iid random variables …

Roots of random functions: a framework for local universality

O Nguyen, V Vu - American Journal of Mathematics, 2022 - muse.jhu.edu
We investigate the local distribution of roots of random functions of the form $ F_n (z)=\sum_
{i= 1}^ n\xi_i\phi_i (z) $, where $\xi_i $ are independent random variables and $\phi_i (z) …

Random trigonometric polynomials: universality and non-universality of the variance for the number of real roots

Y Do, HH Nguyen, O Nguyen - Annales de l'Institut Henri Poincare …, 2022 - projecteuclid.org
In this paper, we study the number of real roots of random trigonometric polynomials with iid
coefficients. When the coefficients have zero mean, unit variance and some finite high …

Variations on Salem–Zygmund results for random trigonometric polynomials: application to almost sure nodal asymptotics

J Angst, G Poly - Electronic Journal of Probability, 2021 - projecteuclid.org
On some probability space (Ω, F, P), we consider two independent sequences (ak) k≥ 1 and
(bk) k≥ 1 of iid random variables that are centered with unit variance and which admit a …

On the real zeros of random trigonometric polynomials with dependent coefficients

J Angst, F Dalmao, G Poly - Proceedings of the American Mathematical …, 2019 - ams.org
We consider random trigonometric polynomials of the form\[f_n (t):=\sum _ {1\le k\le n} a_
{k}\cos (kt)+ b_ {k}\sin (kt),\] whose coefficients $(a_ {k}) _ {k\ge 1} $ and $(b_ {k}) _ {k\ge 1} …

Limit theorems for random Dirichlet series

D Buraczewski, C Dong, A Iksanov… - Stochastic Processes and …, 2023 - Elsevier
We prove a functional limit theorem in a space of analytic functions for the random Dirichlet
series D (α; z)=∑ n≥ 2 (log n) α (η n+ i θ n)/nz, properly scaled and normalized, where (η n …

Expected number of real zeroes of random Taylor series

H Flasche, Z Kabluchko - Communications in Contemporary …, 2020 - World Scientific
Let ξ 0, ξ 1,… be iid random variables with zero mean and unit variance. Consider a random
Taylor series of the form f (z)=∑ k= 0∞ ξ kckzk, where c 0, c 1,… is a real sequence such …

Real roots of random orthogonal polynomials with exponential weights

Y Do, D Lubinsky, HH Nguyen, O Nguyen… - arXiv preprint arXiv …, 2022 - arxiv.org
We consider random orthonormal polynomials $$ P_ {n}(x)=\sum_ {i= 0}^{n}\xi_ {i} p_ {i}(x),
$$ where $\xi_ {0} $,..., $\xi_ {n} $ are independent random variables with zero mean, unit …

Universality of the minimum modulus for random trigonometric polynomials

NA Cook, HH Nguyen - arXiv preprint arXiv:2101.07203, 2021 - arxiv.org
It has been shown in a recent work by Yakir-Zeitouni that the minimum modulus of random
trigonometric polynomials with Gaussian coefficients has a limiting exponential distribution …