Definition:Reversed Contour

Definition
Let $C$ be a contour.

Then $C$ is defined as a concatenation of a finite sequence $C_1, \ldots, C_n$ of directed smooth curves.

The reversed contour of $C$ is denoted $-C$ and is defined as the concatenation of the finite sequence :


 * $-C_n, -C_{n-1}, \ldots, -C_1$

where $-C_i$ is the reversed directed smooth curve of $C_i$ for all $i \in \left\{ {1, \ldots, n}\right\}$.

It follows from Reversed Contour is Contour that this defines a contour.

Also denoted as
The reversed contour of $C$ is denotes as $C^-$ in some texts.