3 papers
math.CV2026
On the univalence criteria for elliptic polyharmonic and polyelliptic-harmonic mappings
Rajib Mandal, Sudip Kumar Guin
In this paper, we first establish Landau-Bloch-type theorems for poly -elliptic harmonic mappings, which are sharp in some given cases. Thereafter, we provide several coeff…
math.CV2025
The Landau-type theorems for functions with logharmonic Laplacian and bounded length distortions
Sudip Kumar Guin, Rajib Mandal
In this study, we establish certain Landau-type theorems for functions with logharmonic Laplacian of the form , , where is logharmonic and is ha…
math.CV2025
On meromorphic solutions of certain Fermat-type difference and analogues equations concerning open problems
Rajib Mandal, Raju Biswas, Sudip Kumar Guin
In this paper, we have found that some certain Fermat-type shift and difference equations have the meromorphic solutions generated by Riccati type functions. Also we have solved th…