I want to prove that no finite group acts free in $ \mathbb{R}^n $ in the process I found the following doubt:
How can you prove that: If $ E \rightarrow X $ is a covering, then $ |\pi_1 (X)|$ divides to $ \chi (E) $?
I want to prove that no finite group acts free in $ \mathbb{R}^n $ in the process I found the following doubt:
How can you prove that: If $ E \rightarrow X $ is a covering, then $ |\pi_1 (X)|$ divides to $ \chi (E) $?
Copyright © 2021 JogjaFile Inc.