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| Some Notes on Solvability of LPDO | |
| 作者姓名： | 牛培平 罗学波 |
| 摘 要： | The purpose of this paper is to discuss how the lower order terms of a LPDO with multiple characteristics influence the solvability of the operators. We begin with the followiog operator: L(x,D)=D_1~2+x_1~2D_2~2+pD_2+qD_1+c where p,q,c are assumed be complex constants. Theorem 1 The operator L will be locally solvable for any q,c, if either |Re p|<1 or Im p=0. |
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