I am reading T. Samuely'sSzamuely's book on Galois groups and fundamental groups. As preparation to the algebraic case, he remindsrecalls the topological case. So I am wondering if a surjective local homeo fhomeomorphism $f$ from some connected space X$X$ to R^n$\mathbb{R}^n$ is necessarily a covering, in which case it would be bijective since R^n$\mathbb{R}^n$ is simplyconnectedsimply connected. What
What about the differentiable case?