Rigidity of Beltrami fields with a non-constant proportionality factor
arXiv:2108.03870 · doi:10.1063/5.0087152
Abstract
We prove that bounded Beltrami fields must be symmetric if a proportionality factor depends on 2 variables in the cylindrical coordinate and admits a regular level set diffeomorphic to a cylinder or a torus.
arXiv comment12 pages
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