Global smooth solutions of 3-D quasilinear wave equations with small initial data

Ding Bingbing, Liu Yingbo, Yin Huicheng

In this paper, we are concerned with the 3-D quasilinear wave equation $ \ds\sum_{i,j=0}^3g^{ij}(u, \p u)\p_{ij}^2u$ $=0$ with $(u(0,x), \p_tu(0,x))=(\ve u_0(x), \ve u_1(x))$, wher…