Can Introductory Vector Calculus Prove C = Curl A?

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SUMMARY

The discussion centers on proving that if the divergence of a vector field C is zero, then there exists a vector field A such that C equals the curl of A. This proof can be established using introductory vector calculus concepts, specifically leveraging vector identities. The participants express uncertainty about the necessity of advanced topics like differential topology and Poincaré's Lemma, indicating that the proof can be approached with fundamental vector calculus knowledge.

PREREQUISITES
  • Understanding of vector calculus identities
  • Knowledge of divergence and curl operations
  • Familiarity with vector fields
  • Basic concepts of differential topology (optional for deeper understanding)
NEXT STEPS
  • Study the relationship between divergence and curl in vector calculus
  • Learn about the Poincaré's Lemma and its implications in vector fields
  • Explore vector calculus identities relevant to curl and divergence
  • Investigate the construction of vector fields satisfying specific conditions
USEFUL FOR

This discussion is beneficial for students of mathematics, particularly those studying vector calculus, as well as educators and anyone interested in the foundational principles of vector fields and their properties.

morangta
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Homework Statement


Given that the divergence of a vector C = 0, show that there exists a vector A such that C = curl A.

Homework Equations


See above.

The Attempt at a Solution


No clue. Can this be proved with introductory vector calculus? That's all I know, including many of the vector-calculus identities. I don't know anything about differential topology, Poincare's Lemma, etc.

I assume that somehow A has to be constructed, but that's as far as I get.

Thank you.
 
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morangta said:

Homework Statement


Given that the divergence of a vector C = 0, show that there exists a vector A such that C = curl A.

Homework Equations


See above.

The Attempt at a Solution


No clue. Can this be proved with introductory vector calculus? That's all I know, including many of the vector-calculus identities. I don't know anything about differential topology, Poincare's Lemma, etc.

I assume that somehow A has to be constructed, but that's as far as I get.

Thank you.

What is .(xA)?
 

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