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Pratiksha

Publications and source records attributed to Pratiksha.

2 recordsLinked to original sources

On normality and $φ$-normality of holomorphic functions in several complex variables

In this paper, we investigate $φ$-normal functions and normal families of holomorphic functions concerning total derivatives in $\mathbb{C}^{n}.$ More precisely, we prove a sufficient condition for a holomorphic function defined on an open unit ball in $\mathbb{C}^{n}$ satisfying certain conditions involving higher order partial derivatives to be $φ$-normal. Furthermore, by using differential inequalities involving total differential polynomials in $\mathbb{C}^{n}$, we establish some normality criteria for holomorphic functions in $\mathbb{C}^{n}$ which generalize some known results.

math.CV

A Zalcman-Pang type rescaling result for $ϕ$-normal harmonic mappings and applications

We investigate normality and $ϕ$-normality criteria for harmonic mappings in the unit disk. A new sufficient condition for normality involving extended spherical derivatives is established. We further prove a Zalcman-Pang type rescaling lemma for $ϕ$-normal harmonic mappings and derive new $ϕ$-normality criteria as applications. In addition, we introduce $ϕ$-normal families of harmonic mappings and obtain corresponding Lappan-type characterizations. In particular, we show that for sense-preserving harmonic mappings the relevant test set may be taken to consist of only three points.

math.CV