Definition:Topology Induced by Metric

Definition
Let $\left({M, d}\right)$ be a metric space.

The topology induced by the metric $d$ is defined as the set $\tau$ of all open subsets of $M$.

Also see

 * Metric Induces Topology, in which it is shown that $\tau$ is, in fact, a topology on $M$
 * Subspace Topology (sometimes also called the induced topology)