Oscillation criteria for second order nonlinear delay inequalities
1976 ◽
Vol 14
(3)
◽
pp. 331-341
◽
Keyword(s):
Oscillation criteria are obtained, for the nonlinear delay differential inequality u(u″+f(t, u(t), u(g(t)))) ≤ 0. The main theorems give sufficient conditions (and in some cases sufficient and. necessary conditions) for all solutions u(t) to have arbitrary large zeros. Generalizations to more general cases are discussed.
1970 ◽
Vol 30
(3)
◽
pp. 695-701
◽
1989 ◽
Vol 39
(2)
◽
pp. 161-165
2020 ◽
Vol 75
(1)
◽
pp. 135-146