On each homework assignment, please write (i) your name, (ii) name of course, and (iii) homework number. You are allowed and encouraged to work together on homework. Yet, each student is expected to turn in their own work. In general, late homework will not be accepted. However, you are allowed to turn in one late homework assignment with no questions asked. Unless you have made arrangements in advance with me, homework turned in after class will be considered late. I reserve the right to modify assignments if the need arises. When doing your homework, I encourage you to use the Elements of Style for Proofs as a reference.


Here are the assignments. I will post them as we go.

  • Homework 1: Complete 1.1, 1.2, 1.3, 1.4, 1.6. It's not required, but if you are motivated, I bet 1.5 is fun, too. (Due Friday, September 9)
  • Homework 2: Complete any four of 1.7, 1.8, 1.9, 1.11, 1.12. (Due Wednesday, September 14)
  • Homework 3: Complete 1.10, 1.13, 1.14, 1.15. (Due Wednesday, September 21)
  • Homework 4: Choose 3 from 2.1, 2.2, 2.3, and 2.6. (Due Wednesday, September 29)
  • Homework 5: Complete 2.4, 2.7, 2.8. (Due Wednesday, October 5)
  • Homework 6: Choose 2 from 3.1, 3.2(parts 3 and 6), 3.4(part 1), 3.5 and also complete 3.6. (Due Wednesday, October 19)
  • Homework 7: Complete any 2 of 3.8, 3.9, 3.10, 3.11. (Due Wednesday, October 26)
  • Homework 8: Complete 5.1 and 5.5 (skip last part about weak order). (Due Wednesday, November 2)
  • Homework 9: Complete 5.7 and 5.6 (in either order). (Due Wednesday, November 9)
  • Homework 10: Complete 5.2 and 5.3. (Due Wednesday, November 16)
  • Homework 11: Choose any 3 from 5.8, 5.9 (you do not need to write down the matrix for the $n=4$ case), 5.11, 5.12. (Due Friday, December 9)

Dana C. Ernst

Mathematics & Teaching

  Northern Arizona University
  Flagstaff, AZ
  Google Scholar
  Impact Story

Current Courses

  MAT 411: Abstract Algebra
  MAT 690: Genome Combinatorics

About This Site

  This website was created using GitHub Pages and Jekyll together with Twitter Bootstrap.

  Unless stated otherwise, content on this site is licensed under a Creative Commons Attribution-Share Alike 4.0 International License.

  The views expressed on this site are my own and are not necessarily shared by my employer Northern Arizona University.

  The source code is on GitHub.

Land Acknowledgement

  Flagstaff and NAU sit at the base of the San Francisco Peaks, on homelands sacred to Native Americans throughout the region. The Peaks, which includes Humphreys Peak (12,633 feet), the highest point in Arizona, have religious significance to several Native American tribes. In particular, the Peaks form the Diné (Navajo) sacred mountain of the west, called Dook'o'oosłííd, which means "the summit that never melts". The Hopi name for the Peaks is Nuva'tukya'ovi, which translates to "place-of-snow-on-the-very-top". The land in the the area surrounding Flagstaff is the ancestral homeland of the Hopi, Ndee/Nnēē (Western Apache), Yavapai, A:shiwi (Zuni Pueblo), and Diné (Navajo). We honor their past, present, and future generations, who have lived here for millennia and will forever call this place home.