Definition:Orientation of Contour (Complex Plane)

Definition
Let $C$ be a contour in the complex plane $\C$ with parameterization $\gamma: \closedint a b \to \C$.

Set $K := \set { t \in \closedint a b : \textrm{ $\gamma$ is not differentiable at $t$ } }$.

Also see

 * Orientation of Contour is Well-Defined
 * Simple Closed Contour has Orientation
 * Reversed Contour Reverses Orientation