Module 15 :  Vector fields, Gradient, Divergence and Curl
Lecture 44 :  Gradient Divergence and Curl [Section 44.1]
44.1.6 Symbolic representation of divergence:
 

Recall that, the divergence of a scalar field was represented using the operator

We can use this operator to represent divergence of a vector field. For a vector field

 

where the last equality is as if we have taken the dot product of with One also writes above as


We describe next the properties of divergence with respect to various operations.

44.1.7 Theorem:
 

Let be differentiable scalar fields and be a differentiable vector field. Then the following hold:

(i) .
(ii) .
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