Our results are new and contribute to the development of the asymptotic periodicity theory of evolution equations.
The robustness and stability of the oscillation at different diffusion coefficient D can also be quantified by the phase coherence ξ, a measure of the degree of periodicity of the time evolution for a given variable [26].
We also obtained the coherence ξ, which measures the degree of periodicity of the time evolution of a given variable [24], at different diffusion coefficient D. In the presence of fluctuations, the more periodic the evolution is, and the larger value of ξ appears.
Periodicity in evolution of premixed methane air V-shaped flames in the space domain is investigated experimentally.
M. cassinii has also been chosen here as an experimental species in respect to the question of evolution of periodicity in cicadas.
However, the pulses are slowly evolved over a considerably different time scale of ∼400 round-trips (∼2 ms in terms of evolution time; Fig. 3a). Figure 3: Long-term periodicity and internal interactions of stochastic pulses in dynamical spatio-temporal regimes.
The intensity of the vortex was found to reveal a roughly 60-year periodicity affecting the evolution of the large-scale atmospheric circulation and the character of SA/GCR effects.
By processing the problem through fixed point theory and propagator theory, we investigate the periodicity of solutions to a class of impulsive evolution equations in Hilbert spaces and establish some existence theorems for periodic solutions.
This is proof of evolution.
A discussion of evolution.
