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Regular growth of solutions of the riccati equationW′ +W2=e2zin the complex plane

 

作者: D. Gokhman,  

 

期刊: Complex Variables, Theory and Application: An International Journal  (Taylor Available online 1995)
卷期: Volume 27, issue 4  

页码: 365-382

 

ISSN:0278-1077

 

年代: 1995

 

DOI:10.1080/17476939508814830

 

出版商: Gordon and Breach Science Publishers

 

关键词: 34A20

 

数据来源: Taylor

 

摘要:

Solutions of the Riccati equationW′ +W2=e2zare known to be asymptotic toezore-z. We show that those solutions which are asymptotic toezhaveregular growthoverC(ez) as z→∞ in funnel-like regionsDbetween curves of the form. Here the notion of regular growth over a differential fieldHof holomorphic germs onDis inspired by real Hardy field theory and is a generalization of the classical notion of non-oscillation. It means that for any differential polynomialP(X,X′,…) with coefficients inH, the functionP(W,W′,…) is ultimately zero free inDor identically zero.

 

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