Feigenbaum's second constantThe second Feigenbaum constant or Feigenbaum's alpha constant (sequence A006891 in the OEIS), is the ratio between the width of a tine and the width of one of its two subtines (except the tine closest to the fold). A negative sign is applied to α when the ratio between the lower subtine and the width of the tine is measured.[1] These numbers apply to a large class of dynamical systems (for example, dripping faucets to population growth).[1] A simple rational approximation is 13/11 × 17/11 × 37/27 = 8177/3267. References
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