Schwenk's Formula
Let 
be the number of Monochromatic Forced Triangles (where 
and 
are thenumber of red and blue Triangles) in an Extremal Graph. Then
where
is a Binomial Coefficient and 
is the Floor Function (Schwenk 1972).See also Extremal Graph, Monochromatic Forced Triangle
References
Schwenk, A. J. ``Acquaintance Party Problem.'' Amer. Math. Monthly 79, 1113-1117, 1972.
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