What is the Coarea Formula and How Can It Be Proven?

  • Context: Graduate 
  • Thread starter Thread starter Matthollyw00d
  • Start date Start date
  • Tags Tags
    Formula
Click For Summary
SUMMARY

The Coarea Formula is a significant result in differential geometry that relates the integration of functions over manifolds to the integration over their level sets. In the discussion, the user initially struggled to find an appropriate change of variable for proving the formula but ultimately resolved the issue using integration techniques over manifolds and Fubini's Theorem. The reference to section 4.2 of the arXiv paper (http://arxiv.org/abs/0804.3291) indicates its relevance to understanding the proof. This highlights the importance of foundational concepts in geometry and analysis for mastering the Coarea Formula.

PREREQUISITES
  • Differential Geometry
  • Integration on Manifolds
  • Fubini's Theorem
  • Real Analysis
NEXT STEPS
  • Study the Coarea Formula in detail through advanced calculus resources.
  • Learn about integration techniques on manifolds.
  • Review Fubini's Theorem applications in multiple integrals.
  • Explore the arXiv paper referenced for deeper insights into the Coarea Formula.
USEFUL FOR

Mathematicians, students of differential geometry, and researchers interested in advanced integration techniques and the Coarea Formula.

Matthollyw00d
Messages
92
Reaction score
0
I'm trying to prove the coarea formula (not in the most general case) and it looks like it shouldn't be too difficult after an appropriate change of variable, however I'm not seeing that appropriate change of variable. Any hints? A link would work fine too, however outside the wikipedia page on coarea, I've yet to come across any site with anything relevant at all. For such an important formula, there sure is nothing on it.
 
Physics news on Phys.org


I figured it out with a little integration over manifolds and fubini's theorem. Thanks anyway though.
 

Similar threads

  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 11 ·
Replies
11
Views
3K
Replies
17
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 69 ·
3
Replies
69
Views
5K
  • Sticky
  • · Replies 0 ·
Replies
0
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 35 ·
2
Replies
35
Views
4K
Replies
11
Views
7K