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Let D be a simple region and let C be its boundary.  Suppose P: D -> '''R''' and Q: D -> '''R''' are of class C1.  Then
 
Let D be a simple region and let C be its boundary.  Suppose P: D -> '''R''' and Q: D -> '''R''' are of class C1.  Then
  
<math>\int_C+ \P * dx + Q * dy = \int_\int_D \((part(Q) / part(x) - part(P) / part(y))) * dx * dy.</math>
+
<math>\int_C+ \P * dx + Q * dy = \int_ \int_D \ ((part(Q) / part(x) - part(P) / part(y))) * dx * dy.</math>

Latest revision as of 13:47, 21 January 2009

Daniel Castillo's Favorite Theorem

My favorite theorem is Green's Theorem. Here it is as it is stated in Jerrold E. Marsden & Anthony J. Tromba's Vector Calculus:

Let D be a simple region and let C be its boundary. Suppose P: D -> R and Q: D -> R are of class C1. Then

$ \int_C+ \P * dx + Q * dy = \int_ \int_D \ ((part(Q) / part(x) - part(P) / part(y))) * dx * dy. $

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Basic linear algebra uncovers and clarifies very important geometry and algebra.

Dr. Paul Garrett