A remark on the two-dimensional magneto-hydrodynamics-alpha system
Abstract
We study the two-dimensional generalized magnetohydrodynamics-α system with fractional Laplacians in the dissipative and diffusive terms. We show that the solution pair of velocity and magnetic fields preserves their initial regularity in all cases when the powers add up to one. This settles the global regularity issue in the general case which was remarked by the authors in [33] to be a problem.
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