... family In 2009, Charak and Rieppo generalized Theorem C and obtained two normality criteria of Lahiri’s type Journal of Inequalities and Applications Theorem D Let F be a family of meromorphic functions ... 2.1 Journal of Inequalities and Applications Suppose that z0 is a zero of f of multiplicity p ≥ k , then z0 is a zero of Ψ of multiplicity dp − Σk jnj , and thus is a pole of Ψ − c /Ψ of multiplicity ... New Zealand Journal of Mathematics, vol 34, no 1, pp 61–65, 2005 K S Charak and J Rieppo, “Two normality criteria and the converse of the Bloch principle,” Journal of Mathematical Analysis and Applications,...