# College of the Holy Cross, Fall 2018

## Math 243 (Mathematical Structures) Problem Sets

Professor Hwang (rhymes with song).

Please bookmark this page and check it every week for new assignments and other current course information. As the term progresses, periodically re-read the academic honesty information below to be sure your habits aren't slipping.

Important note: The problem sets are your chance to work through ideas and course concepts in a low-risk setting. It's far more important to learn from your mistakes on the problem sets than it is to get a high score on each assignment. Please treat written work accordingly. Don't mindlessly mimic your classmates' work just for the sake of getting a few more homework points. This bad habit will come back to bite you on the midterms.

You are welcome to engage in honest collaboration with your classmates on the problem sets. Specifically, write up the first draft of each problem set entirely on your own. Let the ideas sit for a day or two. Then meet with one or two classmates and compare your ideas.

Do not exchange written work with classmates; doing so constitutes dishonest collaboration. As noted above, this bad habit will also harm your course grade in the long run.

• In submitting written work for grading at Holy Cross, you implicitly certify that the work is written in your own words. (This does not mean you have made a few minor changes of word choice, but that you have understood the ideas and explained them in terms natural to you, personally.)
• You must acknowledge by name any classmates you worked with by writing “I worked with...” at the top of your assignment.
• Except for resources I distribute in class or by email, you may not use Internet resources or printed solutions of any kind in this course.
 This Week's Assignment Expectations for Written Work

### Written Assignments

Problem Set 4: Due Friday, September 28

 Practice Grader Proofs Chap. 3 (pp. 84-90): 2, 3, 11 1, 5, 22, 23(a) and (c) 6, 12

Problem Set 3: Due Friday, September 21

 Practice Grader Proofs Chap. 1 (pp. 24-34): 34, 37 Chap. 3 (pp. 84-90): 12, 13 15 4, 6

Problem Set 2: Due Friday, September 14

 Practice Grader Proofs Chap. 2 (pp. 50-54): 7, 8, 10, 18, 19, 21 1, 2(a) and (d), 4, 6, 8(c) 9, 11, 20

Problem Set 1: Due Friday, September 7

 Practice Grader Proofs Chap. 1 (pp. 24-34): 1, 2-12, 17, 18-21, 30-33 2(a), 13, 19, 24(b), 26 14(a), 27 Chap. 2 (pp. 50-54): 1-5

### Expectations for written work

General Guidelines: Briefly, treat each written assignment like a job application.

• Write up questions neatly in the order assigned, clearly indicate which problem is which, and leave space for extensive comments. Do not write on both sides of the page unless your paper is thick enough that a felt-tip pen will not bleed through.
• Problem sets are due at the beginning of class. No late assignments will be accepted for any reason. If an unforeseen emergency prevents you from completing an assignment, please notify me immediately.
• Staple your assignment before you come to class. Do not use paper clips; “dog-earing” is not acceptable. There will be an automatic 10% deduction for each unstapled assignment.