- #1
PsychonautQQ
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Homework Statement
Consider the field extension Q(c):Q, where c is a primitive nth root of unity. Is this extension normal?
Homework Equations
The Attempt at a Solution
I believe this polynomial splits in x^n - 1,where it's n roots are exactly the powers of c. Thus this extension is normal because Q(c) is a finite splitting field of the polynomial x^n-1 over Q. Is this correct?