Lectures related to Cyclotomic field

Explores decomposition groups, inertia subgroups, Galois theory, unramified primes, and cyclotomic fields in group actions and field extensions.

Explores cyclotomic extensions, prime numbers, and ideal norms in number theory.

Discusses the classification of finite extensions of Qp and introduces Krassner's Lemma on root continuity.

Covers solving linear inhomogeneous differential equations and finding their general solutions using the method of variation of constants.