The strong oscillation and oscillation for a class of quasilinear hyperbolic sys- tems with the effect of impulse and delay are discussed. By using Green＇s formula and Neumann boundary condition, the oscillatory problems to the systems are reduced to the nonexistence problems of eventually positive solutions of two order impulsive delay differ- ential inequality, and thereby some sufficient criteria are obtained for the strong oscillation and oscillation of such systems via impulsive differential inequality. The obtained results fully indicate that...
