English

Bohr's Phenomenon for Some Univalent Harmonic Functions

Complex Variables 2021-03-16 v1

Abstract

In 1914 Bohr proved that there is an r0(0,1)r_0 \in(0,1) such that if a power series m=0cmzm\sum_{m=0}^\infty c_m z^m is convergent in the open unit disc and m=0cmzm<1|\sum_{m=0}^\infty c_m z^m|<1 then, m=0cmzm<1\sum_{m=0}^\infty |c_m z^m|<1 for z<r0|z|<r_0. The largest value of such r0r_0 is called the Bohr radius. In this article, we find Bohr radius for some univalent harmonic mappings having different dilatations and in addition, also compute Bohr radius for the functions convex in one direction.

Keywords

Cite

@article{arxiv.2103.07729,
  title  = {Bohr's Phenomenon for Some Univalent Harmonic Functions},
  author = {Chinu Singla and Sushma Gupta and Sukhjit Singh},
  journal= {arXiv preprint arXiv:2103.07729},
  year   = {2021}
}

Comments

13 pages, 3 figures

R2 v1 2026-06-24T00:06:29.629Z