Harmonic Mean
The harmonic mean 
of 
points 
(where 
, ..., ) is
 | (1) |
is therefore | (2) |
 | (3) |
and radius 
and the MeanCurvature of a general surface are related to the harmonic mean.Hoehn and Niven (1985) show that
 | (4) |
. See also Arithmetic Mean, Arithmetic-Geometric Mean, Geometric Mean, Harmonic-Geometric Mean,Root-Mean-Square
References
Abramowitz, M. and Stegun, C. A. (Eds.). Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing. New York: Dover, p. 10, 1972. Hoehn, L. and Niven, I. ``Averages on the Move.'' Math. Mag. 58, 151-156, 1985.
- Bicupola
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