TY - JOUR TT - Dördüncü mertebeden sınırlı gecikmeli nonlineer diferansiyel denklemlerin çözümlerinin kararlılığı ve sınırlılığı AU - Korkmaz, Erdal PY - 2017 DA - December Y2 - 2017 DO - 10.16984/saufenbilder.308097 JF - Sakarya University Journal of Science JO - SAUJS PB - Sakarya University WT - DergiPark SN - 2147-835X SP - 1317 EP - 1324 VL - 21 IS - 6 KW - Stability KW - Boundedness KW - Lyapunov functional KW - Delay differential equations KW - Fourth order N2 - Bu makalede Lyapunov’un ikinci metodu kullanılarak dördüncümertebeden otonom olmayan değişken gecikmeli diferansiyel denklemlerinçözümlerinin düzgün asimptotik kararlılığı ve sınırlılığı için yeterli şartlarıveririz. Elde edilen sonuçlar literatürdeki sonuçları tamamlar, kapsar vegeliştirir. CR - [1] A. M. A. Abou-Ela-Ela and A. I. Sadek, "A stability result for certain fourth order differential equations," Ann. Differential Equations, vol. 1, no. 6, pp. 1-9, 1990. [2] O. A. Adesina and B. S. 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