数学物理学报(英文版)

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MEROMORPHIC FUNCTIONS SHARING TWO FINITE SETS

林伟川; 仪洪勋   

  1. 福建师范大学数学系, 福州 350007
  • 收稿日期:2005-05-15 修回日期:1900-01-01 出版日期:2007-10-20 发布日期:2007-10-20
  • 通讯作者: 林伟川
  • 基金资助:

    This work was supported by the National Natural Science Foundation of China (10671109), Fujian Province Youth Science Technology Program (2003J006) and the Doctoral Programme Foundation of Higher Education (20060422049)

MEROMORPHIC FUNCTIONS SHARING TWO FINITE SETS

Lin Weichuan; Yi Hongxun   

  1. Department of Mathematics, Fujian Normal University, Fuzhou 350007, China
  • Received:2005-05-15 Revised:1900-01-01 Online:2007-10-20 Published:2007-10-20
  • Contact: Lin Weichuan

摘要:

Let S1={∞} and S2={w: Ps(w)=0}, Ps(w) being a uniqueness polynomial under some restricted conditions. Then, for any given nonconstant meromorphic function f, there exist at most finitely many nonconstant meromorphic functions g such that f-1(Si)=g-1(Si), (i=1,2), where f-1(Si) and g-1(Si)$ denote the pull-backs of Si considered as a divisor, namely, the inverse images of Si counted with multiplicities, by f and g respectively.

关键词: Meromorphic function, uniqueness polynomial, shared-set

Abstract:

Let S1={∞} and S2={w: Ps(w)=0}, Ps(w) being a uniqueness polynomial under some restricted conditions. Then, for any given nonconstant meromorphic function f, there exist at most finitely many nonconstant meromorphic functions g such that f-1(Si)=g-1(Si), (i=1,2), where f-1(Si) and g-1(Si)$ denote the pull-backs of Si considered as a divisor, namely, the inverse images of Si counted with multiplicities, by f and g respectively.

Key words: Meromorphic function, uniqueness polynomial, shared-set

中图分类号: 

  • 30D35