standard topology

Noun

 * 1)  The topology of the real number system generated by a basis which consists of all open balls (in the real number system), which are defined in terms of the one-dimensional Euclidean metric.
 * 2)  The topology of a Euclidean space $$\mathbb{R}^n$$ such that any subset of that space is open (i.e. belonging to the topology) if it can be written as a union of open balls from that space.