Interval oscillation theorems for second order nonlinear partial delay differential equations
Interval oscillation theorems for second order nonlinear partial delay differential equations
Using the integral averaging method and the generalized Riccati technique, we derive new interval oscillation criteria for second order nonlinear partial delay differential equations.These results are different from most known ones in the sense that they are based on information only on a sequence of subintervals of [0,∞) , rather …