This paper is concerned with the oscillation of first-order delay differential equations X' (t) + p (t)x (tau(t)) = 0, where p (t) and tau (t) are piecewise continuous and nonnegative functions and tau (t) is nondecreasing. A new oscillation criterion is obtained.
机构:
Univ S China, Dept Math, Hengyang 421001, Hunan, Peoples R China
Hunan Normal Univ, Dept Math, Changsha 410081, Hunan, Peoples R ChinaUniv S China, Dept Math, Hengyang 421001, Hunan, Peoples R China
Guan, Kaizhong
Shen, Jianhua
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机构:
Hangzhou Normal Univ, Dept Math, Hangzhou 310036, Zhejiang, Peoples R China
Coll Huaihua, Dept Math, Huaihua 418008, Hunan, Peoples R ChinaUniv S China, Dept Math, Hengyang 421001, Hunan, Peoples R China
机构:
Cent S Univ Technol, Dept Math Appl, Changsha 410083, Hunan, Peoples R ChinaCent S Univ Technol, Dept Math Appl, Changsha 410083, Hunan, Peoples R China
Tang, XH
Yu, JS
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机构:Cent S Univ Technol, Dept Math Appl, Changsha 410083, Hunan, Peoples R China
机构:
South China Univ Technol, Sch Math, Guangzhou 510640, Guangdong, Peoples R ChinaSouth China Univ Technol, Sch Math, Guangzhou 510640, Guangdong, Peoples R China
Wu, Hongwu
Chen, Churong
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机构:
South China Univ Technol, Sch Math, Guangzhou 510640, Guangdong, Peoples R ChinaSouth China Univ Technol, Sch Math, Guangzhou 510640, Guangdong, Peoples R China
Chen, Churong
Zhuang, Rongkun
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机构:
Huizhou Univ, Dept Math, Huizhou 516007, Peoples R ChinaSouth China Univ Technol, Sch Math, Guangzhou 510640, Guangdong, Peoples R China