point symmetry

基本解释

Firstly, we calculate the Lie point symmetry of 1+2-dimensional nonlinear evolution equation:Which arises from the motion of plane curves in affine geometry.
我们首先计算了来自射影几何的平面曲线运动的非线性发展方程：所容许的李点对称群。
Firstly, the Green function's source point and field point symmetry and geometry symmetry are discussed, and based on these, symmetry properties used in the matrix solving are discussed.
首先分析了格林函数的场点源点对称性和几何对称性，并由此入手，对对称性在速度势求解矩阵中的应用进行了分析。
They belong to C_(2V) local symmetry. From the point of view of point-charge model the ligand field semi-quantitative calculation is applied to molecules with C_(2v) point group symmetry.
指出它们均具有C_（2v）局部对称性，并从晶体场点电荷模型出发对具有C_（2v）对称性点群的分子进行了配位场半定量计算。