Necessary and Sufficient Conditions for Oscillation ofBounded Solutions of Nonlinear Second Order Difference Equations
Received:September 14, 1999  
Key Words: second order difference equation   oscillation   delay.  
Fund Project:Supported by the National Natural Science Fonndation of China (19571023) and the Natural Science Foundation of Hebei province (100139)
Author NameAffiliation
ZHANG Zhen-guo College of Math. & Info. Sci.
Hebei Normal University
Shijiazhuang
China
 
ZHANG Cai-shun Dean's Office
Hebei Normal University
Shijiazhuang
China 
YU Yuan-hong Inst. Appl. Math.
Academic Sinica
Beijing
China 
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Abstract:
      In this paper, we give necessary and sufficient conditions for oscillation of bounded solutions of nonlinear second order difference equation △（pn△yn）+qnf（yn-rn）=0. Obtained results improve theorems in the literature [3,6,7].
Citation:
DOI:10.3770/j.issn:1000-341X.2002.04.010
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