Work

Explicit Cartesian Coordinates for Three-Dimensional Clothoids

Year: 2026
Type: preprint
Abstract: We combine the spherical-clothoid reconstruction theorem of Lucas and Ortega-Yagues with an explicit spinorial parametrization of the spherical clothoid and a Kampe de Feriet evaluation of Kummer-product integrals. This gives explicit Cartesian coordinates, in arclength, for every nonhelical three-dimensional clothoid. Kummer asymptotics then yield explicit asymptotic lines, including their gamma-digamma offsets and the angle between their axes.
Open Access status: green
OpenAlex ID: W7204961641
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