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- From: pa@verano.sba.ca.us (Pierre Asselin)
- Newsgroups: sci.math
- Subject: Reference for de Rham's theorem?
- Summary: Need introductory reference to de Rham's theorem.
- Keywords: closed exact differential forms
- Message-ID: <1129@verano.sba.ca.us>
- Date: 13 Sep 92 21:07:29 GMT
- Organization: None. Santa Barbara, CA
- Lines: 25
-
- I need a reference for the following facts:
-
- -In a differentiable manifold where every closed curve is
- continuously deformable to a point, a 1-form is a gradient
- iff its exterior derivative is zero.
-
- -In a differentiable manifold where every closed surface is
- continuously deformable to a point, a 2-form is the exterior
- derivative of a 1-form iff its exterior derivative is zero.
-
- In other words, I need sufficient conditions for closed k-forms to be
- exact, for k= 1,2. This is for a manuscript where algebraic topology is
- the *least* of my concerns. I just need to get it out of the way. The
- Encyclopaedia Britannica tells me that I'm looking for de Rham's
- theorem.
-
- What would be the standard, vanilla, everybody-knows-that, available-
- everywhere, reference for de Rham's theorem? The more elementary the
- better.
-
- My site doesn't receive sci.math; please reply by email. Thanks.
- --
-
- --Pierre Asselin, Santa Barbara, California
- pa@verano.sba.ca.us
-