- #1
DanielThrice
- 29
- 0
Show that Q/Z is isomorphic to the multiplicative group U∗ consisting of all roots of unity
in C. (That is, U∗ = {z ∈ C|zn= 1 for some n ∈ Z+}.)
I don't really understand how to prove this isomorphism
in C. (That is, U∗ = {z ∈ C|zn= 1 for some n ∈ Z+}.)
I don't really understand how to prove this isomorphism