Smoooth vector field: Difference between revisions
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* It is a [[derivation]] from the algebra of <math>C^\infty</math> functions on the manifold, to itself | * It is a [[derivation]] from the algebra of <math>C^\infty</math> functions on the manifold, to itself | ||
* It is a section of the [[tangent bundle]] | * It is a section of the [[tangent bundle]], which is a [[smooth map]] | ||
* it is a rule that associates (smoothly) to every point in the manifold a tangent vector | * it is a rule that associates (smoothly) to every point in the manifold a tangent vector | ||
Revision as of 20:37, 3 April 2008
Definition
A smooth vector field on a differential manifold can be defined in any of the following equivalent ways:
- It is a derivation from the algebra of functions on the manifold, to itself
- It is a section of the tangent bundle, which is a smooth map
- it is a rule that associates (smoothly) to every point in the manifold a tangent vector