A Result of Borel′s Direction for Algebroid Functions
Received:April 12, 1996  
Key Words: algebroid function   covering surfaces   Borel′s direction.  
Fund Project:
Author NameAffiliation
Gao Zongsheng Beijing University of Aeronautics and Astronautics
Beijing 100083 
Hits: 2082
Download times: 1633
Abstract:
      In this paper, the following theorem is obtained: Let w=w(z) be a υ valued algebroid function of finite order ρ>0 for |z|<∞ , then there exists a direction L: arg z=θ(0≤θ<2π) , such that for any δ>0(δ<π/2 ), with 3υ-1 possible exceptions for any value of a . Where n3) (r,Δ(θ,δ),a) is the numbers of distinct zeros with multiplicity ≤3 of w(z)-a in Δ(θ,δ)∩{|z|≤r} .
Citation:
DOI:10.3770/j.issn:1000-341X.1999.05.009
View Full Text  View/Add Comment