排序方式: 共有14条查询结果,搜索用时 281 毫秒
1.
给出一类高阶非线性函数方程的一些新的非振动准则,并且给出了在差分方程中的若干应用,结果改进和推广了近期文献的某些结果. 相似文献
2.
In this paper, necessary and sufficient conditions for the oscillation and asymptotic behaviour of solutions of the second
order neutral delay differential equation (NDDE)
are obtained, where q, h ∈ C([0, ∞), ℝ) such that q(t) ≥ 0, r ∈ C
(1) ([0, ∞), (0, ∞)), p ∈ C ([0, ∞), ℝ), G ∈ C (ℝ, ℝ) and τ ∈ ℝ+. Since the results of this paper hold when r(t) ≡ 1 and G(u) ≡ u, therefore it extends, generalizes and improves some known results.
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3.
Yang Shujie Shi Bao Gai Mingjiu 《Annals of Differential Equations》2005,21(3):503-506
Some oscillation and non-oscillation criteria for second-order quasi-linear difference equations are given. The results in Zhang and Zhou [4] are improved. 相似文献
4.
In this paper, A. B, Mingarelli‘s result is generalized to General Volterra-Stieltjes Integro-differential Equations. Comparison theorem and equivalence condition of non-oscillation are obtained.Clasical Sturm comparison theorem and some conclusions are generalized. 相似文献
5.
A. K. Tripathy 《Mathematica Slovaca》2008,58(5):581-604
Oscillatory and asymptotic behaviour of solutions of a class of fourth order nonlinear neutral difference equations of the
form
and
are studied under the assumption < ∞, for different ranges of p(n). Sufficient conditions are obtained for the existence of positive bounded solutions of (E).
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6.
In this paper, sufficient conditions are obtained for oscillation of all nontrivial, prepared, symmetric solutions of a class
of nonlinear second order matrix differential equations of the form
and
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7.
Zheng Zhaowen 《Annals of Differential Equations》2005,21(3):525-528
Using the associated quadratic functional of the Hamiltonian system, we obtain the non-oscillation of all the prepared solutions for the Hamiltonian system at a finite point. 相似文献
8.
Ten objective rates, spinning or non-spinning, are critically examined from the viewpoint of Sturm's theorems in ordinary
differential equations. Upon developing implication relations of oscillatory, non-oscillatory, and disconjugate behavior,
we establish oscillation and non-oscillation criteria which pick out the objective stress rates that lead to oscillatory and
non-oscillatory responses in simple shear deformation, respectively. Among the hypoelastic equations associated with the spinning
objective rates examined, the Jaumann equation is an oscillatory minorant, the homogeneous Xiao–Bruhns–Meyers equation is
a non-oscillatory majorant, and the homogeneous Green–Naghdi equation is a disconjugate majorant. If (Sturm comparable) non-spinning
objective rates are also taken into consideration, then the Durban–Baruch equation becomes an oscillatory minorant, but the
other two equations remain to play the same roles. The Jaumann equation is a Sturm majorant for all the other nine homogeneous
hypoelastic equations, and the homogeneous Szabó–Balla-2 equation is a Sturm minorant for all the other nine homogeneous hypoelastic
equations. Most of the solutions of the zeroth-grade hypoelastic equations at simple shear have already been published, except
for those of Szabó and Balla, to which the closed-form solutions are derived here. Moreover, all solutions are extended to
include the effect of initial stresses.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
9.
In this paper, we first establish the equivalence of the oscillation of thedifference equations with several delays of the form: Δx_n+sum from i=1 to m(pi(n)x_(n-k_i))=0 for n≥0and the second-order difference equations without delay of the form:where{pj(n)}is a sequence of nonnegative real numbers and{k_i}_(i=1)~m is a setof positive integers. Then we get some "sharp" conditions for oscillation andnon-oscillation of the first equation. 相似文献
10.
A. K. Tripathy 《Mathematica Slovaca》2008,58(2):221-240
Oscillatory and asymptotic behaviour of solutions of a class of nonlinear fourth order neutral difference equations of the
form
and
are studied under the assumption , for various ranges of p(n). Sufficient conditions are obtained for the existence of bounded positive solutions of (NH).
相似文献