Journal
NONLINEAR DYNAMICS
Volume 85, Issue 1, Pages 195-201Publisher
SPRINGER
DOI: 10.1007/s11071-016-2678-4
Keywords
Lyapunov exponent; Lyapunov characteristic exponent; Lyapunov dimension of attractor; Time-varying linearization; Regular and irregular linearization; Diffeomorphism
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Funding
- Russian Scientific Foundation [14-21-00041]
- Saint-Petersburg State University
- Russian Science Foundation [14-21-00041] Funding Source: Russian Science Foundation
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Nowadays the Lyapunov exponents and Lyapunov dimension have become so widespread and common that they are often used without references to the rigorous definitions or pioneering works. It may lead to a confusion since there are at least two well-known definitions, which are used in computations: the upper bounds of the exponential growth rate of the norms of linearized system solutions (Lyapunov characteristic exponents, LCEs) and the upper bounds of the exponential growth rate of the singular values of the fundamental matrix of linearized system (Lyapunov exponents, LEs). In this work, the relation between Lyapunov exponents and Lyapunov characteristic exponents is discussed. The invariance of Lyapunov exponents for regular and irregular linearizations under the change of coordinates is demonstrated.
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