unit binormal

unit binormal

[′yü·nət bī′nȯr·məl]
(mathematics)
A unit vector in the same direction as the binormal to a point on a surface or space curve.
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References in periodicals archive ?
The unit binormal B is a Killing vector field on Frenet helices; hence, their evolution under the B-flow satisfies [x.sub.t] = B, so we assume k(s, t) is not constant.
Where t is the unit tangent vector, b is the unit binormal vector and n is the unit binormal vector; k is the curvature and [tau] is the torsion.