3 papers
math.CV2026
Logarithmic Inverse Coefficients and Moduli Differences of Janowski Class
Chayani Dhara, Nirupam Ghosh
In this paper, we study the sharp bounds of the first three logarithmic inverse coefficients for Janowski convex class . We also derive sharp upper and lower bou…
math.FA2022
Invariant subspaces of idempotents on Hilbert spaces
Neeru Bala, Nirupam Ghosh, Jaydeb Sarkar
In the setting of operators on Hilbert spaces, we prove that every quasinilpotent operator has a non-trivial closed invariant subspace if and only if every pair of idempotents with…
math.CV2016
On Some Subclass of Harmonic Close-to-convex Mappings
Nirupam Ghosh, A. Vasudevarao
Let denote the class of harmonic functions in normalized by . For , we consider the foll…