Graduate algebra I

Some standard policies

  • Homework is due at the beginning of class on the Wednesday after it is assigned. No late homework will be accepted.

  • I encourage you to work in groups to solve the problems; your write-ups, however, should be completed individually.

  • I will assign homework on a weekly basis; I expect clearly organized and worded solutions (if you are able and willing to type even better). I will consider anything illegible to be wrong.

Assignments

  • Homework 1: (Due September 5)
    1.1: 9, 15, 25, 28, 29
    1.2: 5
    1.3: 1, 6, 15, 18
    1.5: 1

  • Homework 2: (Due September 12)
    1.2: 7
    1.4: 5, 11 (a), (b), (e)
    1.6: 2, 3, 20, 23
    1.7: 8, 14, 15, 18, 19

  • Homework 3: (Due September 19)
    2.1: 8, 9, 14
    2.2: 6, 10, 12
    2.3: 25
    2.4: 3, 12, 15, 16
    + Show that a finite group with no more that two maximal subgroups is cyclic.

  • Homework 4: (Due September 26)
    2.5: 12, 13, 14
    3.1: 11, 19, 22, 36, 41
    3.2: 4, 9, 18
    + Suppose N is a nontrivial abelian subgroup of G, minimal with the property that it is normal in G. Let H be a proper subgroup of G such that NH=G. Show that the intersection of N with H is trivial and H is a maximal subgroup of G.

  • Homework 5: (Due October 3)
    3.3: 6, 7, 9, 10
    3.4: 2, 7, 11
    3.5: 6, 10
    4.1: 7, 9

  • Homework 6: (Due October 17)
    4.2: 9, 11
    4.3: 13, 19, 23, 24, 33
    4.4: 3, 8 (b)-(c), 18, 20 (a)-(b)
    +: Show that if a simple group has order less 60, then it is abelian (of prime order)

  • Homework 7: (Due October 24)
    4.5: 16, 26, 30, 32, 35, 44
    4.6: 4
    5.1: 4
    5.4: 15, 19
    5.5: 12, 18, 23

  • Homework 8: (Due October 31)
    5.2: 8, 14
    6.1: 7, 10, 20, 24, 25, 26, 31
    +: Without using Feit--Thompson, show that if the order of group is greater than 60 and less than or equal to 100, then it is only simple if it is abelian.

  • Homework 9: (Due November 7)
    6.2: 4, 5, 6, 7, 10, 12, 22, 25
    6.3: 10, 12, 14

  • Homework 10: (Due November 14)
    7.1: 7, 11, 14
    7.2: 2, 7, 13
    7.3: 22, 25, 29, 34
    7.4: 10, 30, 37

  • Homework 11: (Due December 5)
    7.5: 4, 5
    7.6: 1, 6
    8.1: 3, 7
    8.2: 6, 7, 8
    8.3: 2, 6, 11

  • Homework 12: (Due December 12)
    9.1: 4, 10, 13
    9.2: 2, 3, 4, 10
    9.3: 3
    9.4: 7, 12, 16, 17