## Found 8 Documents (Results 1–8)

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### Riccati techniques and variational principles in oscillation theory for linear systems. (English)Zbl 0648.34031

Reviewer: J.Ohriska
MSC:  34C99
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### Oscillation theory for differential systems in abstract spaces. (English)Zbl 0628.34060

Differential equations: qualitative theory, 2nd Colloq., Szeged/Hung. 1984, Colloq. Math. Soc. János Bolyai 47, 155-166 (1987).
MSC:  34G10 34C10

MSC:  34C10
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### Oscillation theory for second order differential systems with functionally commutative matrix coefficients. (English)Zbl 0613.34025

Reviewer: E.Brommundt
MSC:  34C10

### Oscillation theory for second order differential systems with functional commutative coefficients. (English)Zbl 0611.34071

Differential and integral equations, Proc. 12th Midwest Conf., Iowa City/Iowa 1983, 15-18 (1985).
Reviewer: E.Brommundt
MSC:  34K99 34C10

### Some properties of second order linear differential equations and perturbations that preserve them. (English)Zbl 0559.34056

Reviewer: H.S.Nur
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### An integral criterion for the oscillation of a second order sublinear ordinary differential equation. (English)Zbl 0532.34024

Reviewer: B.Aulbach
MSC:  34C10 34A34

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