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- W2018889265 abstract "We consider the second order matrix differential systems (1) $(P(t)Yâ)â + Q(t)Y = 0$ and (2) $Y'' + Q(t)Y = 0$ where $Y,;P$ and $Q$ are $n times n$ real continuous matrix functions with $P(t),;Q(t)$ symmetric and $P(t)$ positive definite for $t in [{t_0},infty );(P(t) > 0,t geqslant {t_0})$. We establish sufficient conditions in order that all prepared solutions $Y(t)$ of (1) and (2) are oscillatory. The results obtained can be regarded as generalizing well-known results of Kamenev in the scalar case." @default.
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- W2018889265 date "1993-04-01" @default.
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- W2018889265 title "Kamenev type theorems for second-order matrix differential systems" @default.
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- W2018889265 doi "https://doi.org/10.1090/s0002-9939-1993-1154244-0" @default.
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