Science in China Series A: Mathematics

, Volume 48, Issue 1, pp 107–114 | Cite as

Angular distribution in complex oscillation theory

  • Shengjian Wu


Let f 1 and f 2 be two linearly independent solutions of the differential equation f″ + Af = 0, where A is an entire function. Set E = f 1 f 2. In this paper, we shall study the angular distribution of E and establish a relation between zero accumulation rays and Borel directions of E. Consequently we can obtain some results in the complex differential equation by using known results in angular distribution theory of meromorphic functions.


angular distribution zero accumulation ray Borel direction 


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Copyright information

© Science in China Press 2005

Authors and Affiliations

  1. 1.LMAM, School of Mathematical SciencesPeking UniversityBeijingChina

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