Q(Sn), where n> 2 and Sn E C is a primitive nth root of unity. Prove that the subfield Q(Sn+Sn') is the maximal real subfield of K. (Hint: For maximality, determine the degrees of the extensions in the associated tower of fields.) Consider the nth cyclotomic field K =
Q(Sn), where n> 2 and Sn E C is a primitive nth root of unity. Prove that the subfield Q(Sn+Sn') is the maximal real subfield of K. (Hint: For maximality, determine the degrees of the extensions in the associated tower of fields.) Consider the nth cyclotomic field K =
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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