### MATH 320: Abstract Algebra I

#### Spring 2004

A note on presenting induction arguments [posted on 27 January 2004]
A note on introducing elements in proofs [posted 9 February 2004]

Comments on Exercise 2.9 [posted on 3 February 2004]
Some thoughts on Exercise 3.14 [posted on  30 January 2004]
Some thoughts on Exercises 4.17 & 4.20 [posted on 9 February 2004]
A hint on Exercise 13.8 [posted 2 April 2004]

#### Group submissions

Exercise 0.13 [submitted by K G Valente]
Exercise 1.6 [submitted by Group 1]: Page 1, Page 2, Page 3, Page 4, Page 5
Exercise 2.8 [submitted by Group 3]
Exercise 3.11 [submitted by Group 2]
Exercise 4.21 [submitted by Group 5]
Exercise 5.2 [submitted by Group 4]
Exercise 5.14 [submitted by Group 6]
Exercise 6.10 [submitted by Group 1]
Exercise 7.11 [submitted by Group 3]
Exercise 8.11 [submitted by Group 2]
Exercise 8.15 [submitted by Group 5]
Exercise 9.13 (a,b) [submitted by Group 4]
Exercise 10.6 (revised) [submitted by Group 1, aka "Team Awesome"]
Exercise 10.14 (a,b) [submitted by Group 6]
Exercise 10.14 (c, d, e) [submitted by K G Valente]
Exercise 11.23 [submitted by Group 5]
Exercise 11.14 [submitted by Group 2]
Exercise 12.3 [submitted by Group 3]
Exercises 12.21 and 12.29 [submitted by Groups 4 and 6 respectively]
Note the last line of 12.29 was cut off.  It should end "... has exactly p-1 automorphisms."
Exercise 13.7a [submitted by Group 1]
Exercise 13.7b [submitted by Group 1]
Exercise 13.13 [submitted by Group 3]
Exercise 14.4 [submitted by Group 2]
Note: It's easy to misread the problem as stated in the text.  Be sure you understand what is being asserted!]
Exercise 14.9: [submitted by Group 5]
Exercise 16.16 [submitted by Group 4]
Exercise 16.24 [submitted by K G Valente]
Exercise 17.21 [submitted by K G Valente]
Exercise 17.25 [submitted by Group 6]

Last revised: 30 April 2004.  Questions to: kvalente@mail.colgate.edu