Div(curl(F)) = 0, understanding its meaning.

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The discussion centers on the mathematical relationship between the curl and divergence of vector fields in R3. It concludes that if div(curl(G)) is not equal to zero, then G cannot be a vector field, implying that G does not exist. The participants explore the implications of this result, questioning whether G could be a scalar field or a conservative field if div(curl(G)) were zero. Ultimately, the consensus is that the non-zero divergence of the curl indicates that a vector field G cannot be formed from the given expression. Therefore, the existence of such a vector field is ruled out.
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Homework Statement



Is there a vector field F on R3 such that curlG = <xy2,yz2, zx2>?



The Attempt at a Solution



div(curl(G)) ≠ 0, so no, G is not a vector field.

Now my question is, does this conclude any thing about G? does that mean G is a scalar field?

If by some chance that div(curl(G)) = 0, does that mean G is also a conservative field?
 
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Curl only acts on vector fields. Since div(curl(G)) is not 0, we can conclude that G does not exist. In other words, there is no way you can get a curl of something to have a divergence.
 
Question: A clock's minute hand has length 4 and its hour hand has length 3. What is the distance between the tips at the moment when it is increasing most rapidly?(Putnam Exam Question) Answer: Making assumption that both the hands moves at constant angular velocities, the answer is ## \sqrt{7} .## But don't you think this assumption is somewhat doubtful and wrong?

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