Proceedings of the Japan Academy, Series A, Mathematical Sciences
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On new singular directions of some Schröder functions

Nan Wu and Zu-Xing Xuan

Source: Proc. Japan Acad. Ser. A Math. Sci. Volume 85, Number 9 (2009), 123-128.

Abstract

In this paper, we study the Hayman T directions and the precise Borel directions of maximal kind of meromorphic solutions f(z) of the Schröder equations f(sz)=R(f(z)), where |s|<1 and R(w) is a rational function with $\deg [R]\geq 2$. We will show that, if $\operatorname {arg}[s]/2\pi \notin Q$, then f(z) has any direction as Hayman T direction and maximus Borel direction as well. This is a continue work of [Ishizaki, K. and Yanaihara, N., Borel and Julia directions of meromorphic Schröder functions, Math. Proc. Camb. Phil. Soc. 139 (2005), 139-147.] and [Yuan, W.J., Qi, J.M. and Seiki Mori. Singular directions of meromorphic solutions of some non-autonomous Schröder equations, Complex Analysis and its Applications Proceedings of the 15th ICFIDCAA held in Osaka (Japan), July 30-August 3, 2007].

Primary Subjects: 30D10
Secondary Subjects: 30D20, 30B10, 34M05
Keywords: Hayman $T$ direction; Borel direction of maximal kind; Schröder function

Full-text: Open access

Links and Identifiers

Permanent link to this document: http://projecteuclid.org/euclid.pja/1257430679
Digital Object Identifier: doi:10.3792/pjaa.85.123

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Proceedings of the Japan Academy, Series A, Mathematical Sciences

Proceedings of the Japan Academy, Series A, Mathematical Sciences