Curl
Curl[{f1,f2},{x1,x2}] gives the curl ∂f2/∂x1-∂f1/∂x2.
Curl[{f1,f2,f3},{x1,x2,x3}] gives the curl (∂f3/∂x2-∂f2/∂x3,∂f1/∂x3-∂f3/∂x1,∂f2/∂x1-∂f1/∂x2).
Curl[f,{x1,…,xn}] gives the curl of the n×n×…×n array f with respect to the n-dimensional vector {x1,…,xn}.
Curl[f,x,chart] gives the curl in the coordinates chart.
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