Let G = D10 × Z/7Z, where, as usual, D10 = (a, b | a³ = b² = e, ba = a*b). Let H ((b, 1)) and K = D10 × {0}. (a) Draw a partial lattice diagram of subgroups of G that includes the subgroups H and K. Include also H N K and (H,K). Label the edges with appropriate numbers, and give reasons for what you have done. In what follows, you may refer back to your diagram. (b) What is NG(H), the normalizer of H in G? Why? Is NG(K) = G?
Let G = D10 × Z/7Z, where, as usual, D10 = (a, b | a³ = b² = e, ba = a*b). Let H ((b, 1)) and K = D10 × {0}. (a) Draw a partial lattice diagram of subgroups of G that includes the subgroups H and K. Include also H N K and (H,K). Label the edges with appropriate numbers, and give reasons for what you have done. In what follows, you may refer back to your diagram. (b) What is NG(H), the normalizer of H in G? Why? Is NG(K) = G?
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter4: More On Groups
Section4.6: Quotient Groups
Problem 23E
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