Differential Forms Homework: Closed But Not Exact

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SUMMARY

The discussion centers on the existence of a differential form defined on all of R² that is closed but not exact. It concludes definitively that such a form does not exist, referencing Stokes' theorem as the foundational principle supporting this conclusion. The participants agree that while closed forms can exist in R²\{0,0}, extending this to all of R² leads to contradictions in the context of differential topology.

PREREQUISITES
  • Understanding of differential forms and their properties
  • Familiarity with Stokes' theorem and its implications
  • Basic knowledge of topology, particularly in R²
  • Concept of closed and exact forms in differential geometry
NEXT STEPS
  • Study Stokes' theorem in detail and its applications in differential geometry
  • Explore the properties of closed and exact forms in various topological spaces
  • Investigate examples of differential forms in R²\{0,0} and their implications
  • Learn about the implications of differential topology in higher dimensions
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Mathematicians, students of differential geometry, and anyone studying the properties of differential forms and their applications in topology.

Niles
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Homework Statement


Hi all

I can find a differential form defined on R2\{0,0}, which is closed but not exact, but is it possible to find a differential form defined on all R2, which is closed but not exact?
 
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No, it isn't. That is, essentially, Stoke's theorem.
 

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