零条件下的二维拟线性波动方程(英文)

Null Condition for Quasi linear Wave Equation in Two Space Dimensions

证明了在零条件下，二维拟线性波动方程解的生命区间可以改进．

It is proved that the lifespan of some quasi linear wave equation in two space dimensions can be improved if the nonlinearity satisfies the so called “Null Condition”.