I was reading JS Milne's book on Arithmetic duality theorems and he states on page 105 that for a finitely generated torsion-free G-module (G is actually a galois group) M we have $Hom_{cts}(M,\mathbb{C}^{\times})=Hom(M,\mathbb{C}^{\times})$ where the cts denotes continuous homomorphisms and the second are just homomorphims.
I can quite see why this is true, so I was wondering if I could get some soft of explanation of why this is true since I dont have much of an intuition when it comes to continuous homomorphisms.
Thank you