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Creators/Authors contains: "Zhao, Jiefeng"

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  1. ; ( , Journal of Differential Equations)
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  2. ; ( , International Mathematics Research Notices)
    Abstract

    The global well-posedness on the 2D resistive MHD equations without kinematic dissipation remains an outstanding open problem. This is a critical problem. Any $L^p$-norm of the vorticity $\omega $ with $1\le p<\infty $ has been shown to be bounded globally (in time), but whether the $L^\infty $-norm of $\omega $ is globally bounded remains elusive. The global boundedness of $\|\omega \|_{L^\infty }$ yields the resolution of the aforementioned open problem. This paper examines the $L^\infty $-norm of $\omega $ from a different perspective. We construct a sequence of initial data near a special steady state to show that the $L^\infty $-norm of $\omega $ is actually mildly ill-posed.

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  3. ; ; ; ( , Journal of Evolution Equations)
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