UNT Math: G2(a)A20: On the Index of a Subgroup In Its Normalizer
Автор: UNT Math
Загружено: 2026-01-05
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In this video, we prove that the index of a subgroup in its normalizer is equal to the number of distinct cosets that are invariant under multiplication by A. This problem comes from the UNT Algebra Qualifying Exam from August 2020.
In this series, the talented students of MATH 5520/5530 "Modern Algebra" solve problems from real past qualifying exams given at UNT! Whether you're studying for an upcoming qual exam or just interested in algebra, these videos provide insightful, step-by-step solutions to the problems.
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