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HanYazhou LuoXuebo NiuPengcheng 《偏微分方程(英文版)》2005,18(2):149-153
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. 相似文献
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