Moving frame
Generalization of an ordered basis of a vector space / From Wikipedia, the free encyclopedia
In mathematics, a moving frame is a flexible generalization of the notion of an ordered basis of a vector space often used to study the extrinsic differential geometry of smooth manifolds embedded in a homogeneous space.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/d/d1/Frenet-Serret_moving_frame1.png)