Beltrami Field
A vector field u satisfying the vector identity
| ux(del xu)=0 |
where AxB is the cross product and del xA is the curl is said to be a Beltrami field.
See also
Divergenceless Field, Irrotational Field, Solenoidal FieldExplore with Wolfram|Alpha
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Cite this as:
Weisstein, Eric W. "Beltrami Field." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/BeltramiField.html