Binormal Vector

Definition: Binormal Vector

The binormal vector of a parametric curve $\gamma :D\subseteq \mathbb{R}\to {\mathbb{R}}^3$ is the cross product of its unit tangent vector and its unit normal vector:

$$\mathbf{T}(t)\times \mathbf{N}(t)$$

NOTATION

$$\mathbf{B}(t)$$