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Zbl 1118.34053
Öcalan, Özkan
Oscillation of neutral differential equation with positive and negative coefficients.
(English)
[J] J. Math. Anal. Appl. 331, No. 1, 644-654 (2007). ISSN 0022-247X

Summary: We provide oscillation properties of every solution of the neutral differential equation with positive and negative coefficients $$[x(t)-R(t) x(t-r)]'+P(t)x(t-\tau)-Q(t)x(t-\sigma)=0,$$ where $R(t)$, $P(t)$, $Q(t) \in C([t_0,\infty)$, $\bbfR^+)$, $r>0$, $\tau\ge 0,\sigma\ge 0$.
MSC 2000:
*34K11 Oscillation theory of functional-differential equations
34K40 Neutral equations

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