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## Homework Statement

Hi all

I can find a differential form defined on

**R**

^{2}\{0,0}, which is closed but not exact, but is it possible to find a differential form defined on

**all**

**R**

^{2}, which is closed but not exact?

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- Thread starter Niles
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Hi all

I can find a differential form defined on

- #2

HallsofIvy

Science Advisor

Homework Helper

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No, it isn't. That is, essentially, Stoke's theorem.

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