Recently S. Bank, I. Laine, G. Gundersen, J. Langley and others have inves- tigated the complex oscillation theory of second-order linear differential equations of the
基金Project supported by the National Natural Science Foundation of China, also a part of work as visiting scholar to the Institute of Mathematics, Academia Sinica, Beijing
文摘Recently S. Bank, I. Laine, G. Gundersen, J. Langley and others have inves- tigated the complex oscillation theory of second-order linear differential equations of the
