Hausdorff dimension of images and graphs of some random complex series

Fuente: arXiv
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Main Authors: Lai, Chun-Kit, Lau, Ka-Sing, Zhang, Peng-Fei
Format: Preprint
Published: 2026
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author Lai, Chun-Kit
Lau, Ka-Sing
Zhang, Peng-Fei
author_facet Lai, Chun-Kit
Lau, Ka-Sing
Zhang, Peng-Fei
contents Let $\{X_n= e^{2πi θ_n}\}$ be a sequence of Steinhaus random variables, where $θ_n$ are independent and uniformly distributed on $[0,1]$. We compute the almost sure Hausdorff dimension of the images and graphs of the random complex series $S(x)=\sum_{n=1}^{\infty}a_n X_nϕ_n(λ_nx)$, where $λ_n$ is an increasing sequence with $\sup_nλ_{n+1}/λ_n<\infty$ and $ϕ_n$ satisfies some uniform Lipschitz and boundedness conditions. This class of series includes the famous Weierstrass and Riemann functions as well as others appeared in literature. These results help predict the exact values of the deterministic cases.
format Preprint
id arxiv_https___arxiv_org_abs_2603_05986
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Hausdorff dimension of images and graphs of some random complex series
Lai, Chun-Kit
Lau, Ka-Sing
Zhang, Peng-Fei
Classical Analysis and ODEs
Probability
Let $\{X_n= e^{2πi θ_n}\}$ be a sequence of Steinhaus random variables, where $θ_n$ are independent and uniformly distributed on $[0,1]$. We compute the almost sure Hausdorff dimension of the images and graphs of the random complex series $S(x)=\sum_{n=1}^{\infty}a_n X_nϕ_n(λ_nx)$, where $λ_n$ is an increasing sequence with $\sup_nλ_{n+1}/λ_n<\infty$ and $ϕ_n$ satisfies some uniform Lipschitz and boundedness conditions. This class of series includes the famous Weierstrass and Riemann functions as well as others appeared in literature. These results help predict the exact values of the deterministic cases.
title Hausdorff dimension of images and graphs of some random complex series
topic Classical Analysis and ODEs
Probability
url https://arxiv.org/abs/2603.05986