Riemannian Foliations
摘要
Let M be a n-dimensional \(C^\infty \) manifold, and let \(\mathscr {F}\) be a codimension q foliation of M. Let \(B_T^1 = B^1_T ({\mathscr {F}}) = B^1_T (M, \, {\mathscr {F}})\) be the total space of the transverse frame bundle \(\textrm{GL}(q, \, {\mathbb R}) \rightarrow B_T^1 \rightarrow M\) , and let \(p_T^1 : B_T^1 \rightarrow M\) be the projection. Let \(\theta ^1_T \in C^\infty \big ( T^*\big ( B^1_T \big ) \otimes {\mathbb R}^q \big )\) be the canonical 1-form, i.e.,