Editing Lyapunov exponent (section)

==Conditional Lyapunov exponent==

This term is normally used regarding [[synchronization of chaos]], in which there are two systems that are coupled, usually in a unidirectional manner so that there is a drive (or master) system and a response (or slave) system.  The conditional exponents are those of the response system with the drive system treated as simply the source of a (chaotic) drive signal.  Synchronization occurs when all of the conditional exponents are negative.<ref>See, e.g., {{Cite journal | last1 = Pecora | first1 = L. M. | last2 = Carroll | first2 = T. L. | last3 = Johnson | first3 = G. A. | last4 = Mar | first4 = D. J. | last5 = Heagy | first5 = J. F. | title = Fundamentals of synchronization in chaotic systems, concepts, and applications | doi = 10.1063/1.166278 | journal = Chaos: An Interdisciplinary Journal of Nonlinear Science | volume = 7 | issue = 4 | pages = 520–543 | year = 1997 | pmid =  12779679|bibcode = 1997Chaos...7..520P | doi-access = free }}</ref>