Author/Authors :
J.R. Graef، نويسنده , , E. Thandapani، نويسنده ,
Abstract :
Sufficient conditions for the oscillation of solutions of
equation(E1)
View the MathML source
and
equation(E2)
View the MathML source
are obtained. Here, {pn} is a sequence, View the MathML source, L(n, s) > 0, for View the MathML source, and L(n, s) =0, if n < s, ug(u) > 0, for u ≠ 0, Φ → K(n, s, Φ) maps bounded sets into bounded sets, and for all (n, s) ∈ View the MathML source × View the MathML source, ΦK(n, s, Φ) ≥ 0 if Φ ≠ 0.