New oscillation criteria for third order nonlinear neutral difference equations
Keyword(s):
AbstractIn this paper, we are concerned with oscillation of the third-order nonlinear neutral difference equation $\Delta (c_n [\Delta (d_n \Delta (x_n + p_n x_{n - \tau } ))]^\gamma ) + q_n f(x_{g(n)} ) = 0,n \geqslant n_0 ,$ where γ > 0 is the quotient of odd positive integers, c n, d n, p n and q n are positive sequences of real numbers, τ is a nonnegative integer, g(n) is a sequence of nonnegative integers and f ∈ C(ℝ,ℝ) such that uf(u) > 0 for u ≠ 0. Our results extend and improve some previously obtained ones. Some examples are considered to illustrate the main results.
2015 ◽
Vol 46
(4)
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pp. 441-451
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2019 ◽
Vol 8
(10S)
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pp. 63-66
1992 ◽
Vol 34
(2)
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pp. 245-256
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