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Subgroup index is multiplicative across intermediate subgroups

Math 2年 前

Solution to Abstract Algebra by Dummit & Foote 3rd edition Chapter 3.2 Exercise 3.2.11


Solution: See Lemma 3 of Exercise 3.2.10.

#Index#Lagrange’s Theorem#Subgroup
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The kernel of a group homomorphism is a subgroup
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  • Subgroup 40
  • Order 37
  • Counterexample 36
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