$(p,q)^{th}$ $\psi-$order and $(p,q)^{th}$ $\psi-$type of Entire and Meromorphic Functions and Some of its Estimation
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Keywords:
Entire function, Meromorphic function, $(p,q)^{th}$ $\psi-order$, $(p,q)^{th}$ $\psi-type$Abstract
We introduce the concept of $(p,q)^{th}$ $\psi-order$ and $(p,q)^{th}$ $\psi-type$ of entire and meromorphic functions to generalise some results related to the $\varphi-order$ concept introduced by Chyzhykov-Semochko in [7]. In this paper we establish some estimates of the sum, product and the derivative of entire and meromorphic functions in the complex plane.
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