Notes 3-5. See • Video 16.8.3: Notes on Stokes' for Notes 1 and 2.
3. Circulation around boundary curve C is equal to the total curling of F around points on S.
4. Curl F = 0 ( the 0 vector) means F is irrotational.
5. For given boundary curve, C, the flux integral of the curl F is independent of surface, S.
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