کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9503177 | 1339558 | 2005 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nonlinear functional differential equations with Properties A and B
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
آنالیز ریاضی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this paper, an nth order functional differential equation is considered for which the generalized Emden-Fowler-type equation (0.1)u(n)(t)+p(t)|u(t)|μ(t)signu(t)=0,t⩾0, can be considered as a nonlinear model. Here, we assume that n⩾2, pâLloc(R+;R), and μâC(R+;(0,1]) is a nondecreasing function. In case μ(t)â¡const>0, oscillatory properties of Eq. (0.1) have been extensively studied, where as if μ(t)â¢const, to the extent of authors' knowledge, the analogous questions have not been examined. It turns out that the oscillatory properties of Eq. (0.1) substantially depend on the rate at which the function μ+âμ(t) tends to zero as tâ+â, where μ+=limtâ+âμ(t). In this paper, new sufficient conditions for a general class of nonlinear functional differential equations to have Properties A and B are established, and these results apply to the special case of Eq. (0.1) as well.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Mathematical Analysis and Applications - Volume 306, Issue 1, 1 June 2005, Pages 136-160
Journal: Journal of Mathematical Analysis and Applications - Volume 306, Issue 1, 1 June 2005, Pages 136-160
نویسندگان
John R. Graef, R. Koplatadze, G. Kvinikadze,