April 2 2015 If you do not have a mark posted for Midterm 2, please
bring your midterm to Jamal before or after class on
Tuesday. He will make a note of your mark.
April 2 2015 Here is my complete record
of marks in the course. Please let me know of any
discrepancy as soon as possible, and certainly before the final
exam.
April 1 2015 study guide for
final exam
March 30 2015 slides for Br Bolker's lecture posted on the
calendar
March 26 2015 Problem sheet 9 is now posted.
March 23 2015 Quiz 8 is the LAST quiz. It is on complex numbers
and solving complex polynomial equations. Solutions to Problem
Sheet 8 are posted on the calendar below. Class on Tuesday March
24 will be in BSB B136.
March 16 2015 The final exam question related to the
guest lectures is posted here for you to prepare.
March 16 2015 Solutions to Problem Sheet 7 posted on the
calendar. Continue to work on Problem Sheet 8 this week; complex
numbers will be the topic of Quiz 8, which is on Wednesday March
28. The topic for Quiz 7 this week is cardinality.
March 11 2015 Problem Sheet 8 posted on the calendar
March 10 2015 Review session today for midterm is in HH 302
3:305:30
March 2 2015 Slightly modifed version of Problem Sheet 7 posted
on the calendar.
March 2 2015 Midterm 2 is coming up on Wednesday March 11. NOTE the slightly different time; the midterm will start at exactly 7:00!
Midterm 2 covers induction, rational and real numbers, functions.
You should be able to define rational numbers (as
quotients of integers),
and properties of functions including welldefined, injective,
surjective, domain, range. You should be able to use the
principle of induction
and strong induction to prove statements about positive integers.
You should be able to calculate the periodic decimal
expansion of a rational
number, and the rational form of a periodic decimal expansion. You
should be able to prove assertions about functions.
March 1 2015 Problem Sheet 7 posted on the calendar. A link to a
youtube video with solution to Problem Sheet 6 question 3 is
posted on the calendar. Complete solutions to Problem Sheet 6 will
appear tomorrow.
Feb 24 2015 Problem Sheet 6 posted on the calendar below.
Feb 21 2015: Please note that the fact that the decimal expansion
of a rational number is periodic is a theorem, NOT the definition!
Feb 18 2015: Solutions to Problem Sheet 5 are posted on the
calendar below. parts of Question 2 were quite challenging, so
don't worry if you could not work them out. A summary of the marks
so far are posted here, indexed
by the last 5 digits of student id and sorted in increasing order.
MSAFs are not included. Please let me know if you see an error in
your marks.
Feb 9 2015: I will be in the vicinity of my office on Tuesday
afternoon (except 2:303:30) for anyone who did not get their
midterm back in tutorial and wants to come by and pick it up.
Feb 7 2015: problem sheet 5 and information about quiz 4 now
posted on the calendar.
Jan 29 2015: problem sheet 4 posted on the calendar
Jan 28 2015: Review for Midterm 1: review session Tuesday Feb 3 3:305:30 HH 302. Come prepared with questions for Jamal.
You should know the following definitions: prime, divisible, gcd,
relatively prime, congruent .
You should be able to state the following theorems:
quotient/remainder theorem (2.12), GCD chararacterisation theorem
(2.24), Fermat's Little Theorem (3.42), Inductive property of the
natural numbers (4.11).
You should be able to prove the numbered results from the
text (also covered in lectures): 2.21, 2.27 (i), 2.28, 2.52.
You should be able to use the division algorithm to
calculate quotient and remainder, the euclidean algorithm to find
the greatest common divisor of two numbers, and the definition of
addition and multiplication of congruence classes modulo m.
Review all the problem sheets. Think about the process of proving
a statement: what are the hypotheses that you assume? what are the
definitions of the terms used; how can you restate the hypotheses
to give you information that you can calculate with? what
are you trying to prove (perhaps restated)? how can you rewrite
the information that you have to make it look like the information
that you need?
Think about examples in all of the above. Write down an example to
illustrate the theorem. Write down an example in which the
hypotheses fail to illustrate why they are needed.
Jan 27 2015: Solutions to problem sheet 3 posted below.
Jan 24 2015: Information about Quiz 3 posted on the calendar
below. This weekend, you should work on Problem Sheet 3. Problems
1 and 3 are practice with calculations and the definition of
congruence. For problems 2 and 4, follow the outline of how we
proved similar properties in class. Write down what the
assumptions are telling you, think about what you are trying to
prove, and then do some algebra to go from what you know to what
you want. Problem 5 is a bit more complicated, but the same
approach should get you through it. We will talk about this
problem in class next Wednesday.
Jan 22 2015: Midterm 1 is on Wednesday, February 4, 7:158:45,
in T28 001. Anyone who has a scheduled conflict (evening class or
exam in another class), should email me with their name, id
number, and explanation for the conflict. Anyone who has a
different conflict may email me and ask for special consideration
to take the early write. The alternate seating for the exam will
be the same evening 5:156:45. The location will be sent to the
people whose name is on the approved list. If you want to take the
early write, let me know by Wednesday January 28.
Jan 20 2015: Solutions to Problem Sheet 2 posted on the calendar
below.
Jan 18 2015: Topic for Quiz 2, definitions and theorems to know
are now posted on the calendar below.
Jan 13 2015: Solutions to Problem Sheet 1 now posted on the
calendar.
Jan 9 2015. You should plan to complete Problem Sheet 1 this
weekend. This is not to be handed in, but you can be sure that
problems on the quiz will be closely related to problems that you
have practised. Feel free to ask me or Jamal if you have any
questions about how to do the problems, or if you want to know if
you have expressed your solutions correctly.
In question 4, notice that there is only one
reasonable definition of prime in E. We normally say that a
positive integer p is prime if it is only divisible in the
positive integers by itself and 1, that is, cannot be factored in
the positive integers except in a trivial way. Thus p is prime in
E must mean that the number p in E is only divisible
in E by itself and 1, that is, cannot be factored in E.
Jan 9 2015. Jamal's office hours posted below. This weekend, work
through all of Problem Sheet 1. You should be able to do all the
problems. Anything that you don't understand you should ask about
in tutorial on Monday Jan 13 or class on Tuesday Jan 14.
Jan 6 2015. Corrections made to course outline and Week 1
recommended problems on calendar as pointed out in class.
Jan 4 2014. Welcome to Math 1C03. I am looking forward to the
class, and I hope that you are too. Tutorials start on Thursday
January 8.
Week 
Topic and reading 
Quiz topic (Wednesday) 
Recommended problems 
Comments 
Week 1 Jan 5  9 
2.5 prime numbers read chapter 1 
no quiz 
Problem Sheet 1 p.20 1,3,6,1720,4144,4550 solutions to problem sheet 1 

Week 2 Jan 1216 
2.1, 2.2 division and euclidean algorithms read chapter 2, sections 2.1, 2.2, 2.5 
Quiz 1 is on primes and divisibility Know the definitions of prime, relatively prime and divisibility 
Problem Sheet 2 p.50 1,3,7,9,13,19 solutions to problem sheet 2 

Week 3 Jan 1923 
Finish chapter 2 3.1, read chapter 3, sections 3.1, 
Quiz 2 is on the division and euclidean
algorithms Know the definitions of relatively prime, greatest common divisor. Review the proof of the quotient/remainder theorem. 
Finish working on
problem sheet 2, and the problems on p.50 Problem Sheet 3 p.82 811, solutions to problem sheet 3 

Week 4 Jan 2630 
4.1 induction read section 4.1 
Quiz 3 is on the notion of congruence. Review
the definition, and the elementary properties of congruence
proved in class and on Problem Sheet 3. 
Problem Sheet 4 p.104 6,810,12,15,18,22,23,28 solutions to problem sheet 4 

Week 5 Feb 26 
4.1 induction read section 4.1 
Midterm 1Wednesday Feb
4 7:158:45 pm T28 001 

Week 6 Feb 913 
5.1, 5.2 rational and real numbers  Quiz 4 is on induction. You should know the
inductive principle of the natural numbers and be able to
use it. 
Problem Sheet 5
p. 106 36, 45, 57, 62, 67 p. 121 10, 12, 23, 27 solutions to problem sheet 5 
Guest lecture: Dr Lozinski will speak about
Actuarial and Financial Math on Tuesday Feb 10 
Reading Week Feb 1620 

Week 7 Feb 2327 
6.16.5 functions  Quiz 5 is on rational and real numbers. You
should know the definitions of rational and irrational. 
Problem Sheet 6 video solution to Q3 solutions to problem sheet 6 
Guest lecture: Dr Protas will speak about
numerical and applied mathematics on Wednesday Feb 25 
Week 8 Mar 26 
6.6 cardinality  Quiz 6 is on functions. You should know the
definitions of injective and surjective, and how to prove
that a function has one of these properties. 
Problem Sheet 7 solutions to problem sheet 7 
Guest lecture: Dr Valeriote will speak about
an uncomputable function 
Week 9 Mar 913 
8.18.5 complex numbers 
Midterm 2 Wednesday March 11 7:008:30 T28 001 
Problem Sheet 8 solutions to problem sheet 8 

Week 10 Mar 1620 
8.68.8 complex polynomial equations 7.1 cryptography 
Quiz 7 is on cardinality. You should know the
definition of countably infinite and A=B. 
Guest lecture: Dr Wang 

Week 11 Mar 2327 
7.4 public key cryptography, RSA 
Quiz 8 is on complex numbers. 
Problem Sheet 9  Guest lecture: Dr Bronsard Guest lecture: Dr Bolker 
Week 12 Mar 30Apr 3 
7.4 more on RSA 
April 3 is Easter Friday: no classes 

Week 13 Apr 68 
review 
Guest lecture: Dr Childs 