If U is a coordinate neighborhood with coordinates (xi) then we can write ω α β = ω i α β d x i . {\displaystyle {\omega ^{\alpha }}_{\beta }={{\omega _{i}}^{\alpha }}_{\beta }\,\mathrm {d} x^{i}.} Note the mixture of coordinate and fiber indices in this expression.
如果 U 是一个具有坐标 (xi) 的坐标邻域，则我们可以写成 ω α β = ω i α β d x i . {\displaystyle {\omega ^{\alpha }}_{\beta }={{\omega _{i}}^{\alpha }}_{\beta }\,\mathrm {d} x^{i}.} 注意坐标与纤维指标在表达式中混合在一起。