If two single-valued continuous functions (Curvature) and (Torsion) are given for , then there exists Exactly One Space Curve, determined except for orientation and position in space (i.e., up to a Euclidean Motion), where is the Arc Length, is the Curvature, and is the Torsion.
See also Arc Length, Curvature, Euclidean Motion, Fundamental Theorem of Plane Curves, Torsion (Differential Geometry)
Gray, A. ``The Fundamental Theorem of Space Curves.'' §7.7 in
Modern Differential Geometry of Curves and Surfaces. Boca Raton, FL: CRC Press,
pp. 123 and 142-145, 1993.
Struik, D. J. Lectures on Classical Differential Geometry. New York: Dover, p. 29,
Struik, D. J. Lectures on Classical Differential Geometry. New York: Dover, p. 29, 1988.