User:Dfeuer/Definition:Usual Topology/Rn
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Definition 1
Let $n$ be a strictly positive natural number.
Let $\R$ be the set of real numbers.
The usual topology on $\R^n$ is the topology induced by the Euclidean metric on $\R^n$.
Definition 2
Let $n$ be a strictly positive natural number.
Let $\R$ be the set of real numbers.
The usual topology on $\R^n$ is the product topology on the product $\ds \prod_{i \mathop = 1}^n \R$ where each factor is given the User:Dfeuer/Definition:Usual Topology/Real Line.