论文标题
CHERN类球形cr歧管的类
Chern classes of spherical CR manifolds
论文作者
论文摘要
我们首先构建了维度的闭合球形cr歧管，至少五个具有具有实际系数的非平凡的Chern类。接下来，我们证明了对Chern类的约束，其实际系数（不一定是封闭）球形CR歧管。最后，我们获得了在共同导向接触歧管上存在球形CR结构的拓扑阻塞。
We first construct closed spherical CR manifolds of dimension at least five having non-trivial first Chern class with real coefficients. We next prove a constraint on Chern classes with real coefficients of (not necessarily closed) spherical CR manifolds. Finally, we obtain a topological obstruction to the existence of spherical CR structures on co-oriented contact manifolds.
