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| == Summary ==
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| Image 2 (state at t=10) of a sequence showing a Turing bifurcation from a noisy ground state to a hexagonal state in a two-component reaction-diffusion system of Fitzhugh-Nagumo type, generated by Dr. H. U. Bödeker.
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| The system reads:
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| :<math>
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| \begin{array}{rl}
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| \partial_t u &= d_u^2 \Delta u + u -u^3 - v + \kappa,\\
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| \tau \partial_t v &= d_v^2 \Delta v + u - v
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| \end{array}
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| </math>
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| with ''τ'' = 0.1, ''d<sub>u</sub><sup>2</sup>'' = 0.00028, ''d<sub>v</sub><sup>2</sup>'' = 0.005, ''κ'' = - 0.05
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| and was solved using a finite-element algorithm.
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| == Licensing ==
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| {{self|GFDL|cc-by-sa-2.5,2.0,1.0|migration=relicense}}
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| == Licensing ==
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| {{self|GFDL|cc-by-sa-2.5,2.0,1.0|migration=relicense}}
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| {{Copy to Wikimedia Commons|bot=Fbot|priority=true}}
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