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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