Flux surface: Difference between revisions

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In three dimensions, the only closed flux surface corresponding to a ''non-vanishing'' vector field is a topological toroid.
In three dimensions, the only closed flux surface corresponding to a ''non-vanishing'' vector field is a topological toroid.
<ref>The Poincaré-Hopf Theorem.</ref>
<ref>[[:Wikipedia:Hairy_ball_theorem|The Poincaré-Hopf Theorem]].</ref>
This fact lies at the basis of the design of magnetic confinement devices.
This fact lies at the basis of the design of magnetic confinement devices.


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