K. Wirths

activity

20102022

most citedOn the Fekete-Szegö problem for concave univalent functions

9 citations · 20 across the 19 of their papers we have counts for

collaborators

Showing 2021Show all

2 papers · 1 filter

math.CV2021★ 2 cited

Modifications of Bohr's inequality in various settings

Saminathan Ponnusamy, Ramakrishnan Vijayakumar, Karl-Joachim Wirths

The concept of Bohr radius for the class of bounded analytic functions was introduced by Harald Bohr in 1914. His initial result received greater interest and was sharpened-refined…

math.CV2021

Relations of the class $U (λ)$ to other families of functions

Liulan Li, Saminathan Ponnusamy, Karl-Joachim Wirths

In this article, we consider the family of functions $f$ analytic in the unit disk $∣ z ∣ < 1$ with the normalization $f (0) = 0 = f^{'} (0) - 1$ and satisfying the condition $\big |\big (z/f(z)\…

Modifications of Bohr's inequality in various settings

Relations of the class U(λ) to other families of functions

Relations of the class $U (λ)$ to other families of functions