Some new integral criteria for the oscillation of the nonlinear second order differential equation with damped term $y''(t) + p(t)y'(t) + q(t)f(y(t)) = 0$ are given ...
In this paper, we show that for several second-order partial differential equations \begin{align*}L[u] &= A(x,y)u_{xx} + 2B(x,y)u_{xy} + C(x,y)u_{yy} + D(x,y)u_x + E ...
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