Math 103A
Modern Algebra I

Homework 1: Due Thurs 6 July at 5 pm

• Section 0: 1, 6, 12, 16, 26, 28, 34
• Section 1: 4, 29, 31
• Section 2: 1, 8, 16, 24, 28, 30

Homework 2: Due Tues 11 July at 5 pm

• Section 2: Prove that the binary operation · on A = {a,b,c} defined in class on Friday is associative.

  ·	a	b	c
  a	a	b	b
  b	b	b	b
  c	b	b	b

• Section 3: 3, 5, 8, 13, 15, 21, 26
• Section 4: 1, 2, 13, 24, 25, 35

Homework 3: Due Thurs 13 July at 5 pm

• Section 4: 19, 20, 37
• Section 5: 7, 13, 20, 24, 39, 43, 45, 55

Homework 4: Due Tue 18 July at 5 pm

• Section 5: 36
• Section 6: 14, 20, 21, 28, 35, 45, 48, 49, 56
• Section 7: 1, 9, 15, 18

Homework 5: Due Thurs 20 July at 5 pm

• Section 5: 54
• Section 6: 47
• Section 7: 2
• Section 8: 4, 23, 25, 30, 42, 44, 52

Homework 6: Due Tue 25 July at 5 pm

• Section 9: 2, 5, 8, 11, 22, 23, 34, 36, 37
• Section 10: 6, 9, 11

Homework 7: Due Thurs 27 July at 5 pm

• Section 10: 2, 14, 19, 26, 27, 35, 38, 45
• Section 11: 13, 26, 27, 28, 35

Homework 8: Due Tue 1 Aug at 5 pm

• Section 11: 11, 43, 52
• Section 13: 5, 8, 22, 26, 29, 32, 44, 48, 55

Homework 9: Due Thurs 3 Aug at 5 pm

• Section 14: 7, 14, 23, 24, 25, 31, 32
• Section 15: 2, 8, 16, 24, 30, 31, 35