Divergence

$\nabla \cdot \overrightarrow{v}=(\frac{\partial }{\partial x_1}{F}_1,\cdots ,\frac{\partial }{\partial x_n}{F}_n)$

where:

1. $\overrightarrow{F}:{\mathbb{R}}^n\to {\mathbb{R}}^n$ is a Vector field
2. $\nabla :=(\frac{\partial }{\partial x_1},\cdots ,\frac{\partial }{\partial x_n})$ is the Del or Nabla Vector Operator