Characteristic Class of Isotopy for Surfaces
REN Yuxue · WEN Chengfeng · ZHEN Shengxian · LEI Na· LUO Feng · GU David Xianfeng
Characteristic Class of Isotopy for Surfaces
REN Yuxue · WEN Chengfeng · ZHEN Shengxian · LEI Na· LUO Feng · GU David Xianfeng
Journal of Systems Science and Complexity
.
2020, (6): 2139
-2156
.
DOI: 10.1007/s11424-020-9053-8
