What differences are between $\mathbb{E}^n$ and $\mathbb{R}^n$ What differences are between the two notations $\mathbb{E}^n$ and $\mathbb{R}^n$?
Do they represent/define the same  space set with the same structure(s)?
Thanks and regards!

In my experience $R^n$ is a model for $E^n$. $E^n$ is the axiomatic description of Euclidean space, while $R^n$ is a particular model, i.e., it satisfies the axioms of Euclidean space.
