March 2021 On Petrenko's deviations and second order differential equations
Janne Heittokangas, Mohamed Amine Zemirni
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Kodai Math. J. 44(1): 181-193 (March 2021). DOI: 10.2996/kmj44111
Abstract

New results on the oscillation of solutions of $f''+A(z)f=0$ and on the growth of solutions of $f''+A(z)f'+B(z)f=0$ are obtained, where $A$ and $B$ are entire functions. Petrenko's magnitudes of deviation of $g$ with respect to $\infty$ play a key rôle in the results, where $g$ represents one of the coefficients $A$ or $B$.

Copyright © 2021 Tokyo Institute of Technology, Department of Mathematics
Janne Heittokangas and Mohamed Amine Zemirni "On Petrenko's deviations and second order differential equations," Kodai Mathematical Journal 44(1), 181-193, (March 2021). https://doi.org/10.2996/kmj44111
Received: 17 February 2020; Published: March 2021
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Vol.44 • No. 1 • March 2021
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