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Sufficient conditions are established for the oscillation of proper solutions of the system
where f
i
:+ × 2m (i=1,2) satisfy the local Carathéodory conditions and
i
,
i
:+ +(i=1,...,m) are continuous functions such that
i
(t) t for
. 相似文献
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Oscillation criteria generalizing a series of earlier results are established for first-order linear delay differential inequalities and equations. 相似文献
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R. Koplatadze 《Journal of Mathematical Analysis and Applications》2007,330(1):483-510
We study oscillatory properties of solutions of a functional differential equation of the form
(0.1) 相似文献
4.
Sufficient conditions for the nth order linear differential equation
, to have Property A or Property B are established in both the delayed and the advanced cases. These conditions essentially improve many known results not only for differential equations with deviating arguments but for ordinary differential equations as well. 相似文献
5.
G. T. Adamashvili N. G. Gapishvili R. R. Koplatadze N. M. Zviadadze 《Radiophysics and Quantum Electronics》1992,35(5):310-313
The process of nonlinear-wave formation in a waveguide at microwave frequencies is studied theoretically. It is shown that a nonlinear wave in the form of a pulsating soliton is formed under conditions of uniform spectrum-line broadening. The possibility of experimental observation of the phenomenon is considered.Tbilisi State University. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 35, No. 5, pp. 475–480, May, 1992. 相似文献
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