OSCILLATION CRITERION FOR A CLASS OFSECOND ORDER SUBLINEAR DIFFERENTIALEQUATIONS  

作　　者：董莹[1] 

机构地区：[1]云南工业大学,650051

出　　处：《Annals of Differential Equations》1997年第3期228-231,共4页微分方程年刊（英文版）

摘　　要：In this paper some oscillation criteria are established for equation [q(t)y'] +a(t)f(y) = 0, where a(t) is not assumed to be non-negative and f(y) is nodecreasing in y, and yf(y) > 0 for y≠0, f(y) also satisfics a sublinear condition, q(t) is a positive function on [0, ). These results extend earlier oscillation theorems of Philos and Wong.In this paper some oscillation criteria are established for equation [q(t)y'] +a(t)f(y) = 0, where a(t) is not assumed to be non-negative and f(y) is nodecreasing in y, and yf(y) > 0 for y≠0, f(y) also satisfics a sublinear condition, q(t) is a positive function on [0, ). These results extend earlier oscillation theorems of Philos and Wong.

关 键 词：SUBLINEAR Differential equation OSCILLATION 

分 类 号：O175[理学—数学]