Prove that for a conversation field F cruel F =0
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thanks for free point ..
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I found an algorithm that seems to work out, but perhaps someone can advise me where the divergence free comes into-play to power this algorithm.
Let F be a Euclidean vector-field such that ∇⋅F=0. If there exists a vector-field A such that F=∇×A, then we have the following set of equations. Additionally, I have found that they have the corresponding solutions, where ⊕ is the exclusive or symbol:
∂Az∂y−∂Ay∂z=Fx:Az=∫Fxdy⊕Ay=−∫Fxdz
−(∂Az∂x−∂Ax∂z)=Fy:Az=−∫Fydx⊕Ax=∫Fydz
∂Ay∂x−∂Ax∂y=Fz:Ay=∫Fzdx⊕Ax=−∫Fzdy
These exclusive or ⊕ solutions yield two choices for A
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