Let Xj,j=1,…k,be first order smooth quasi-homogeneous vector fields on R^n with the property that the dimension of the Lie algebra generated by these vector fields is n at x =0 and Xj^*--Xj,j=1,…,k,Let L=∑i=1^k Xi^...Let Xj,j=1,…k,be first order smooth quasi-homogeneous vector fields on R^n with the property that the dimension of the Lie algebra generated by these vector fields is n at x =0 and Xj^*--Xj,j=1,…,k,Let L=∑i=1^k Xi^2，In this paper,we study the nonnegative solutions of semilinear equation.展开更多
文摘Let Xj,j=1,…k,be first order smooth quasi-homogeneous vector fields on R^n with the property that the dimension of the Lie algebra generated by these vector fields is n at x =0 and Xj^*--Xj,j=1,…,k,Let L=∑i=1^k Xi^2，In this paper,we study the nonnegative solutions of semilinear equation.
