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Award ID contains: 1908947

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  1. ; ; (, Discrete and Continuous Dynamical Systems)
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  2. ; ; ; (, Asymptotic Analysis)
    This paper proves that the motion of small-slope vorticity fronts in the two-dimensional incompressible Euler equations is approximated on cubically nonlinear timescales by a Burgers–Hilbert equation derived by Biello and Hunter (2010) using formal asymptotic expansions. The proof uses a modified energy method to show that the contour dynamics equations for vorticity fronts in the Euler equations and the Burgers–Hilbert equation are both approximated by the same cubically nonlinear asymptotic equation. The contour dynamics equations for Euler vorticity fronts are also derived. 
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  3. ; ; (, Pure and Applied Analysis)
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  4. ; ; (, Nonlinearity)
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  5. ; ; (, Communications in Mathematical Sciences)
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