搜索结果: 1-2 共查到“几何学 fundamental groups”相关记录2条 . 查询时间(0.093 秒)
The Symplectic Nature of Fundamental Groups of Surfaces
Surfaces Symplectic Nature
font style='font-size:12px;'>
2015/9/29
A symplectic structure on a manifold is a closed nondegenerate exterior 2-
form. The most common type of symplectic structure arises on a complex
manifold as the imaginary part of a Hermitian metr...
A conjugation-free geometric presentation of fundamental groups of arrangements II: Expansion and some properties
conjugation-free geometric presentation of fundamental groups some properties
font style='font-size:12px;'>
2010/12/1
A conjugation-free geometric presentation of a funda-mental group is a presentation with the natural topological gener-ators x1, . . . , xn and the cyclic relations.