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二阶中立型广义Emden-Fowler方程的振动准则
Oscillation Criteria for Second-Order Generalized Emden-Fowler Equations of the Neutral Type
【摘要】 研究了二阶中立型广义Emden-Fowler方程(r(t)|z′(t)|α-1z′(t))′+f(t,x[σ(t)])=0,t≥t0的若干新的振动准则,其中z(t)=x(t)+p(t)x(τ(t)),f(t,x)sgnx≥q(t)|x|β,α>0,β>0为实数,结果改进、推广和统一了最近文献中的一些熟知的结果,为证明我们结果的重要性,也给出了若干说明的例子.
【Abstract】 New oscillation criteria are established for second-order generalized Emden-Fowler equations of the neutral type of the form(r(t)|z′(t)|α-1z′(t))′+f(t,x[σ(t)])=0,t≥t0 where z(t)=x(t)+p(t)x(τ(t)),f(t,x)sgnx≥q(t)|x|β,α>0,β>0 are real number.Our results improve extend and unify some known results in the literature.Some illustrating examples are also provided to show the importance of our results.
【关键词】 中立型;
Emden-Fowler方程;
Riccati方法;
振动准则;
【Key words】 neutral type; Emden-Fowler equation; Riccati method; oscillation criterion;
【Key words】 neutral type; Emden-Fowler equation; Riccati method; oscillation criterion;
【基金】 国家自然科学基金(11361048);曲靖师范学院数学史与方法论优质课程建设基金资助项目(YZKC2014007)
- 【文献出处】 数学的实践与认识 ,Mathematics in Practice and Theory , 编辑部邮箱 ,2016年01期
- 【分类号】O175
- 【被引频次】3
- 【下载频次】54