Choke point. In military strategy, a choke point (or chokepoint) is a geographical feature on land such as a valley, defile or a bridge or at sea such as a strait, which an armed force is forced to pass, sometimes on a substantially narrower front and therefore greatly decreasing its combat power, to reach its objective.
In this context, a canonical form is a representation such that every object has a unique representation. Thus, the equality of two objects can easily be tested by testing the equality of their canonical forms.anonical form can also mean a differential form that is defined in a natural (canonical) way. In computer science, data that has more than one possible representation can often be canonicalized into a completely unique representation called its canonical form.
In mathematics, the standard basis (also called natural basis or canonical basis) for a Euclidean space is the set of unit vectors pointing in the direction of the axes of a Cartesian coordinate system. For example, the standard basis for the Euclidean plane is formed by vectors. and the standard basis for three-dimensional space is formed by vectors. Here the vector e x points in the x direction, the vector e y points in the y direction, and the vector e z points in the z direction.