Fall 2005
MATH-511 Graduate Algebra I
Homework Assignment 3

Due Wednesday October 26


Done individually

  1. D & F: §4.5, # 23
  2. D & F: §4.5, # 32
  3. D & F: §6.2, # 11
  4. D & F: §6.2, # 14
  5. Find the subgroup lattice for the group Z72. Given the two subnormal series
    {0} ≤ <4> ≤ Z72
    and
    {0} ≤ <18> ≤ <6> ≤ Z72
    follow the proof of Schreier's theorem to find refinements of each series and exhibit the isomorphic factor groups, precisely as in the proof.
  6. D & F: §5.1, # 5
  7. D & F: §5.5, # 6
  8. D & F: §5.5, # 7
  9. D & F: §7.1, # 23
  10. D & F: §7.3, # 22
  11. D & F: §7.3, # 29
  12. D & F: §7.4, # 30
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