Vandeghen's (1965) name for the transformation taking points to their Isotomic Conjugate Points.
See also Isotomic Conjugate Point
References
Vandeghen, A. ``Some Remarks on the Isogonal and Cevian Transforms. Alignments of Remarkable Points of a Triangle.''
Amer. Math. Monthly 72, 1091-1094, 1965.