Oscillation of neutral delay differential equations
1992 ◽
Vol 45
(2)
◽
pp. 195-200
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Keyword(s):
Consider the following neutral delay differential equationwhere P ∈ ℝ, T ∈ (0, ∞), σ ∈ (0, ∞) and Q ∈ C[(t0, ∞), [0, ∞)]. We obtain a sufficient condition for the oscillation of all solutions of Equation (*) with P = −1, which does not require thatBut, for the cases −1 < P < 0 and P < −1, we show that (**) is a necessary condition for the oscillation of all solutions of Equation (*). These new results solve some open problems in the literature.
1987 ◽
Vol 28
(3)
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pp. 362-375
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1993 ◽
Vol 48
(3)
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pp. 475-483
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2018 ◽
Vol 71
(1)
◽
pp. 81-97
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2002 ◽
Vol 29
(4)
◽
pp. 245-249
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1996 ◽
Vol 48
(4)
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pp. 871-886
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1993 ◽
Vol 36
(4)
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pp. 485-496
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1986 ◽
Vol 29
(4)
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pp. 438-445
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