
MAT 311 Problem Sets
Number Theory
Fall 2019

There will be 11 weekly problem sets due at the beginning of lecture
on Wednesday. The lowest problem set score will be dropped when
computing final letter grades.
Problems due one week will often practice material covered in
previous weeks. It is important to do the problems in a timely manner;
do not postpone problems until the last minute.
UNDER NO CIRCUMSTANCES WILL LATE HOMEWORK BE ACCEPTED.
In exceptional circumstances such as a documented medical absence,
etc., the instructor will drop the missing problem set and compute the
problem set total using the remaining problem sets.
You are encouraged to work with other students in the class, but your
final writeup must be your own and must be based on your own
understanding. Moreover, writeups must be legible, etc. Writeups
which prove too difficult to read may be marked
incorrect or may be returned to the student to be rewritten.
All questions regarding grading of a problem set should be addressed
to the instructor in a timely fashion.

Problem Set 1
is due Wednesday, September 4
Section 1.2. Exercises 15, 32, 47.
Section 1.3. Exercises 11, 26, 31, 42.

Problem Set 2
is due Wednesday, September 11
Section 2.1. Exercises 10, 34, 38, 56.
Section 2.2. Exercises 11, 12.

Problem Set 3
is due Wednesday, September 18
Section 2.3. Exercises 3, 14, 25.
Section 2.6. Exercises 3, 6, 9.

Problem Set 4
is due
Wednesday, September 25 Monday, September 30
Section 2.7. Exercise 6.
Section 2.8. Exercise 36. This is a long problem with many parts. If
you get stuck on one part, you may assume that part in later parts
(for partial credit).

Problem Set 5
is due Wednesday, October 9
Section 3.1. Exercises 10, 11, 21.
Section 3.2. Exercises 7, 15, 16.

Problem Set 6
is due Wednesday, October 16
Section 5.1. Exercises 2, 3, 12.
Section 5.2. Exercises 1, 2, 4.

Problem Set 7
is due
Wednesday, October 23 Monday, October 28
Section 3.4. Exercises 4, 8, 9.
Section 3.5. Exercises 1, 3, 5.

Problem Set 8
is due
Wednesday, October 30 Monday, November 4
Section 5.3. Exercises 10, 11.
Section 5.4. Exercises 4, 12, 13.

Problem Set 9
is due Wednesday, November 13
Here is a PDF file with the instructions
for this week's problem set.

Problem Set 10
is due
Wednesday, November 20 Monday, November 25
Section 9.1. Exercises 5, 7.
Section 9.2. Exercises 1, 3.
Section 9.3. Exercises 2, 4.

Problem Set 11
is due Wednesday, December 4
Section 9.1. Exercise 9.
Section 9.2. Exercise 2.
Section 9.3. Exercises 1, 3.
Section 9.4. Exercise 3.
Section 9.5. Exercise 1.
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Jason Starr
4108 Math Tower
Department of Mathematics
Stony Brook University
Stony Brook, NY 117943651
Phone: 6316328270
Fax: 6316327631
Jason Starr