科研之友
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摘要
For even order delay differential equation of the form vertical bar p(t)vertical bar x((n-1))(t)vertical bar(alpha-1)x((n-1))(t)vertical bar' + F(t, x(g(t)) = 0, n even where p is an element of C(1) (vertical bar t(0), infinity); (0, infinity)), F is an element of C([t(o), infinity); R), g is an element of C([t(o), infinity); R) alpha > 0 is a constant, we obtain several new oscillation criteria without assumptions that has been required for the related results obtained before, our results generalize and improve many known conclusions.
- 出版日期2011-9
- 单位曲阜师范大学
