Abstract
In this paper, we further investigate the exponent of convergence of the zero-sequence of solutions of the differential equation $$ f^{(k)}+a_{k-1}(z)f^{(k-1)}+\cdots+a_1(z)f' +\psi(z)f=0, $$ where $\psi(z)=\sum_{j=1}^\iota Q_j(z)e^{P_j(z)} (\iota\geq 3, \iota\in N_+ )$, $P_j(z)$ are polynomials of degree $n\geq1$, $Q_j(z),a_\Lambda(z)(\Lambda=1,2,\cdots,k-1;j=1,2,\ldots,\iota)$ are entire functions of order less than $n$, and $k\geq2$.
Citation
Hong-Yan Xu. Jin Tu. "Further results on the exponent of convergence of zeros of solutions of certain higher order linear differential equations." Bull. Belg. Math. Soc. Simon Stevin 19 (4) 717 - 732, november 2012. https://doi.org/10.36045/bbms/1353695911
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