Editing Logistic map (section)

===Feigenbaum universality of 1-D maps===
Universality of one-dimensional maps with parabolic maxima and [[Feigenbaum constants]] <math>\delta=4.669201...</math>, <math>\alpha=2.502907...</math>.<ref>[http://chaosbook.org/extras/mjf/LA-6816-PR.pdf Feigenbaum, M. J. (1976) "Universality in complex discrete dynamics", Los Alamos Theoretical Division Annual Report 1975-1976]</ref><ref>{{cite journal|last=Feigenbaum|first=Mitchell|date=1978|title=Quantitative universality for a class of nonlinear transformations|journal=Journal of Statistical Physics|volume=19|issue=1|pages=25–52|bibcode=1978JSP....19...25F|citeseerx=10.1.1.418.9339|doi=10.1007/BF01020332|s2cid=124498882}}</ref>

The gradual increase of <math>G</math> at interval <math>[0, \infty)</math> changes dynamics from regular to chaotic one <ref name="Okulov, A Yu 1984">{{cite journal|last1=Okulov|first1=A Yu|last2=Oraevskiĭ|first2=A N|year=1984|title=Regular and stochastic self-modulation in a ring laser with nonlinear element|journal=Soviet Journal of Quantum Electronics|volume=14|issue=2|pages=1235–1237|bibcode=1984QuEle..14.1235O|doi=10.1070/QE1984v014n09ABEH006171}}</ref> with qualitatively the same [[bifurcation diagram]] as those for logistic map.