UNIVERSITY OF MINNESOTA 
SCHOOL OF MATHEMATICS

Math 5286: Honors fundamental structures of algebra (2nd semester)

Spring 2019

Prerequisites: Theoretical background on groups, and vector spaces over a field, including understanding of change-of-basis, eigenvectors, etc. One should either have the ability to write and read mathematical proofs.  
Instructor: Victor Reiner (You can call me "Vic"). 
Office: Vincent Hall 256
Telephone (with voice mail): 625-6682
E-mail: reiner@math.umn.edu 
Classes: Mon-Wed-Fri 10:10-11:00am, Vincent Hall 113. 
Office hours: Monday and Friday 9:05-9:55am, Tuesday 12:20-1:10pm, and by appointment. 
Course content: This is the second semester in a 2-semester sequence on the algebra of groups, ring, fields, and vector spaces.
In the fall we dealt with group theory, as well as vector spaces over fields, while the second semester should be about rings, modules, and field theory
Some goals are understanding the following:
  • compass/straightedge constructions, and why they will never suffice to trisect an arbitrary angle, "duplicate" a cube, "square" a circle,
  • how to construct all finite fields, and why their multiplicative groups are always cyclic,
  • why there is no formula in radicals for the roots of an arbitrary polynomial of degree 5 or higher,
  • why finite abelian groups are always products of cyclic groups.
Required text: Algebra, 2nd edition, by Michael Artin, Prentice-Hall, 2017.
We plan to cover some (but not all) of Chapters 11,12,14,15,16
Other useful texts
Level Title Author(s), Publ. info Location
Lower
(like Math 4281)
Algebra: abstract and concrete Goodman author's download page
Same Judson Abstract algebra: theory and applications author's download page
Topics in algebra Herstein, Wiley & Sons In Math Library (QA155.H4 1975b)
Higher
(like Math 8201)
Abstract algebra Dummit and Foote, Wiley & Sons On reserve in math library
Algebra Lang, Springer/Nature On reserve in math library
Proof writing
and reading
How to read and do proofs Solow, Wiley & Sons In Math Library (QA9.54.S65 2014)
How to prove it Velleman In Math Library (QA9.V38 1994)
Homework,
exams,
grading:
There will be 5 homework assignments due Wednesdays, usually every other week, but
  • 2 weeks where there will be a week-long take-home midterm exam,
  • a week at the end with a week-long take-home final exam, due on Monday, May 6.
Tentative dates for the assignments and exams are in the schedule below.

I encourage collaboration on the homework, as long as each person understands the solutions,
writes them up in their own words, and indicates on the homework page their collaborators.

Forming study groups is a great idea. Here is a guide from Duke University on how to form a successful study group

The take-home midterms and final exam are open-book, open-library, open-web,
but in contrast to the homework on exams, no collaboration or consultation of human sources is allowed.

Late homework will not be accepted. Early homework is fine, and can be left in my mailbox
in the School of Math mailroom near Vincent Hall 105.

Homework solutions should be well-explained-- the grader is told not to give credit for an unsupported answer.
Complaints about the grading should be brought to me.

Final course grade basis :
  • Homework = 40% of grade
  • Midterm exam 1 = 20% of grade
  • Midterm exam 2 = 20% of grade
  • Final exam = 20% of grade
Homework assignments and lecture notes
Assignment or Exam Due date
(Wednesdays, except HW 1)
Problems from Artin,
unless otherwise specified
Lecture notes
Homework 1 2/11 (Mon, not Wed!) 11.1: 2,3,7
11.2: 1
11.3: 2,3(a,b,d),5
11.4: 3(b),4 (removed 3(c,e))
11.5: 1,5 (removed 3)
11.6: 1,5
Note: Feel free to use (without proof) a fact which comes up a couple of times:
the real numbers 1,  2 ,  3 ,  6 , are linearly independent over the rational numbers.
Jan 23
Jan 25
Jan 28
Feb 1
Feb 4
Feb 6
Feb 8
Homework 2 2/27 11.5: 3
11.7: 1,3
11.8: 1,3
12.1: 1,5
12.2: 1,4,6(b)
12.3: 4,6
12.4: 1,6,7,9,13
Feb 11
Feb 13
Feb 15
Feb 18
Feb 20
Feb 22
Feb 25
Exam 1 3/6 Midterm 1
Homework 3 3/27 15.1: 1,2
15.2: 1,2,3
15.3: 1,2,3,6,7(a),10
15.4: 1
15.5: 3,4
Feb 27
Mar 1
Mar 4
Mar 6
Mar 8
Mar 11
Mar 13
Mar 15
Homework 4 4/10 15.6: 1
15.7: 3,4,7,11
15.8: 1,2
Chap. 15 Misc. Problems: M.1, M.4
16.3: 1,2(b,c),3
16.4: 1
Mar 25
Mar 27
Mar 29
Apr 1
Apr 3
Apr 5
Apr 8
Apr 10
Exam 2 4/17 Midterm 2
Homework 5 5/1 16.6: 2
16.7: 3,4,6,10
16.8: 1,2(b,c,d)
16.9: 1
16.10: 3
16.11: 1
16.12: 1,5,8
Chap. 16 Misc. Problems: M.5
Apr 12
Apr 15
Apr 17
Apr 19
Apr 22
Apr 24
Apr 26
Final Exam 5/8
(during finals week)
Final exam Apr 29
May 1
May 3
May 6
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