Definition:Arithmetic Sequence/Common Difference

Definition
Let $\left \langle{a_k}\right \rangle$ be the arithmetic progression:


 * $a_k = a_0 + k d$ for $k = 0, 1, 2, \ldots, n - 1$

The term $d$ is the common difference of $\left \langle{a_k}\right \rangle$.