Communications of the
Korean Mathematical Society
CKMS

ISSN(Print) 1225-1763 ISSN(Online) 2234-3024

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Commun. Korean Math. Soc. 2020; 35(1): 229-241

Online first article August 29, 2019      Printed January 31, 2020

https://doi.org/10.4134/CKMS.c180494

Copyright © The Korean Mathematical Society.

On zeros and growth of solutions of second order linear differential equations

Sanjay Kumar, Manisha Saini

University of Delhi; University of Delhi

Abstract

For a second order linear differential equation $f''+A(z)f'+B(z)f=0$, with $ A(z)$ and $B(z)$ being transcendental entire functions under some restrictions, we have established that all non-trivial solutions are of infinite order. In addition, we have proved that these solutions, with a condition, have exponent of convergence of zeros equal to infinity. Also, we have extended these results to higher order linear differential equations.

Keywords: Entire function, meromorphic function, order of growth, exponent of convergence, complex differential equation

MSC numbers: Primary 34M10, 30D35