The story
First defined and investigated by Schiffler et al. (1985).
Etymology from Wiktionary, CC BY-SA 4.0.
Schiffler point
Today it means: A certain type of triangle center. A triangle △ABC with the incenter I has its Schiffler point at the point of concurrence of the Euler lines of the four triangles △BCI, △CAI, △ABI, △ABC. Full definition →