搜索结果: 1-1 共查到“向量和张量分析 vector fields”相关记录1条 . 查询时间(0.078 秒)
The span of a manifold is its maximum number of linearly independent vector fields. We discuss the question, still unresolved, of whether span(Pm × Pn) always equals span(Pm)+span(Pn). Here Pn denotes...