Hofstadter Point
The 
-Hofstadter Triangle of a given Triangle 
is perspective to , and the Perspective Center is called the Hofstadter point. The Triangle Center Function is
As
, the Triangle Center Function approaches
and as
, the Triangle Center Function approaches
See also Hofstadter Triangle
References
Kimberling, C. ``Hofstadter Points.'' Nieuw Arch. Wiskunder 12, 109-114, 1994. Kimberling, C. ``Major Centers of Triangles.'' Amer. Math. Monthly 104, 431-438, 1997. Kimberling, C. ``Hofstadter Points.''http://cedar.evansville.edu/~ck6/tcenters/recent/hofstad.html.
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