^{1} *This statement is based on this author’s experience as a cadet in the U.S. Army at West Point in the early 1970’s.*

^{2} *Adapted from http://en.wikipedia.org/wiki/Analytic_Hierarchy_Process*, *March 5, 2011.*

^{3} *Given a square matrix A*, *the scalar λ and non-zero vector v are said to be the eigenvalue and the eigenvector of A if Av = λv.*

^{4} *This bathtub curve is the sum of four Weibull curves f*(*t*) = *αβ*^{−α}*t*^{α−1} *exp*(−(*t*/*β*)^{α}) *with α* = 0.5, 1, 3, *and* 10, *β* = 135, *for t in the range* (1,250).

^{5} *The partial autocorrelation at lag k is the autocorrelation between x _{t} and x_{t-k} that is not accounted for by lags 1 through k* – 1.

^{6} *The figure above is different from the original because it puts high market share on the right rather than the left*.

^{7} *Email ...*

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