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 his or her 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. Students are allowed (in fact, encouraged!) to modify their written solutions in light of class discussions; however, **you are required to use the colored marker pens provided in class**.

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. *Note:* You can obtain the corresponding LaTeX files by clicking on the link and replacing .pdf with .tex.

- Homework 1 (Due Friday, 9/4)
- Homework 2 (Due Wednesday, 9/9)
- Homework 3 (Due Wednesday, 9/16)
- Homework 4 (Due Wednesday, 9/23)
- Homework 5 (Due Wednesday, 9/30)
- Homework 6 (Due Friday, 10/9)
- Homework 7 (Due Wednesday, 10/28)
- Homework 8 (Due Wednesday, 11/4)
- Homework 9 (Due Friday, 11/13)
- Homework 10 (Due Wednesday, 11/18)
- Homework 11 (Due Friday, 12/11 by 5pm)

Mathematics & Teaching

Northern Arizona University

Flagstaff, AZ

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MAT 441: Topology

MAT 526: Combinatorics

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