例句與造句

1. Thus a covariant derivative is a way of specifying a derivative of a vector field along another vector field on a manifold.
2. *Another definition is that a vector field on a manifold " M " is a smooth functions on " M ".
3. Differential-forms are naturally dual to vector fields on a manifold, and the pairing between vector fields and-forms is extended to arbitrary differential forms by the interior product.
4. The most important operations are the wedge product of two differential forms, the exterior derivative of a single differential form, the interior product of a differential form and a vector field, the Lie derivative of a differential form with respect to a vector field and the covariant derivative of a differential form with respect to a vector field on a manifold with a defined connection.
5. It's difficult to find vector field on a manifold in a sentence. 用vector field on a manifold造句挺難的