1) operator of covariant differentiation
共变微分算子
2) self-adjoint differential operators
自共轭微分算子
1.
In this paper, the classifications of boundary conditions of the self-adjoint differential operators and it s canonical form are studied.
本文主要研究自共轭微分算子边界条件的分类及其标准型。
4) conjugate partial differential operator
共轭偏微分算子
5) conjugate exterior differential operator
共轭外微分算子
6) left invariant differential operators
左不变微分算子
1.
In this paper, We obtain a sufficient and necessary condition for subellipticity of a classes of left invariant differential operators on two stratified steps nilpotent Lie groups by the method of representative theory method of nilpotent Lie groups.
本文我们用幂零李群表示的方法，给出了二步幂零李群上一类左不变微分算子是亚椭圆的充要条件。
补充资料：共变微分
共变微分
covariant differential
共变徽分tco相的ant击Ife咖柱目;目翻啊娜翻仃.‘.皿”如卜-衅朋.即] 微分概念在不同几何对象范围内的推广.它是流形上取值于张量场U的模的一个张量1形式DU，由下式定义 (D以幻=甲xU，这里诱U是场U沿X的共变导数(covariant deriva-tive)，具体细节见共变微分法(covariant differentia-tion) .H xC为6H’ToB撰潘养廉译
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参考词条