Sept. 9, 2005 : Course information for the new academic year, 2005--2006, is now posted (click on the 'Course Information' button on the left).
Sept. 9, 2005 : These notes will someday become the first chapter of a book for this course (to view these notes you will need Acrobat Reader).
Sept. 20, 2005 : A proof of Euler's Theorem (pdf file) and a guide to understanding this proof.
Sept. 23, 2005 : The first midterm has been moved to October 24, 7:15-8:45 PM.
Sept. 27, 2005 : Corrections to problem set#1: Question 5 should read: Prove that there exists an integer b such that ba is congruent to 1 mod p^2. Also, make sure you look at the new phrasing of the hint to question 5. On question 6, n_5 should be 2^3 and n_6 should be 3^2.
Oct. 3, 2005 : For evening section only: leave your assignment#1 in the yellow bag on the door of Bahen 6188.
Oct. 4, 2005 : Some of last year's assignments and solutions can be found here.
Oct. 18, 2005 :
First midterm (Monday, October 24, 7:15--8:45PM) information: Note the new room assignments!
Nov. 4, 2005 :
Solutions to the first midterm be found here (the average is 80%). Note that even if you got full marks for a question it does not mean your answer is correct. You should compare your solutions to the ones given here.
Day section: students whose last name begins with A-J please go to HA 401 (Haultain Building).
Day section: students whose last name begins with K-Z please go to MS 3163 (Medical Sciences Building).
Evening Section: students whose last name begins with A-V please go to your usual classroom (SS 1085).
Evening Section: students whose last name begins with W-Z please go to HA 401 (Haultain Building)
Extra office hours: Rosenthal(BA6188): Friday October 21 from 8:30 to 10:30AM and Monday October 24 from 6 to 6:45PM.
Korman (BA6168): Friday October 21 from 4:10 to 6PM and Monday October 24 from 5:45-6:45PM.
Nov. 15, 2005 : Homework number 3, typo: On question 3 it should read "x2 < 7", not "x2 < &radic7".
Jan. 10, 2005 :
Second midterm (Monday, January 16, 7:15--8:45PM) information: both sections will write the exam in WW 111 (Woodsworth College, 119 St. George Street).
Jan. 10, 2005 :
Partial solutions to the third homework be found here .
The alternate exam time (for students with a conflict only) is Monday, January 16, 3--4:30PM. Please contact Jonathan by email for the details.
The exam will cover all the material up to (but not including) cardinality. You will not be responsible for the proof of the fundamental theorem of Algebra (though you are responsible for understanding and using this theorem).
The emphasis will be on the material covered since the first midterm.
Extra office hours:
Friday January 13: Rosenthal (BA6188) 11-12 and 2-3; Korman (BA6168) 4-5.
Monday, January 16: Pigott (SP209) 3-4; Korman (BA6168) 5-6.
Jan. 20, 2005: The fourth homework is now posted (click on "Homework" button on the left).
Jan. 23, 2005 : Solutions to the second midterm be found here . The average is 63.
Feb. 24, 2005:
The fifth homework is now posted (click on "Homework" button on the left).
March 3, 2006 :
Third midterm (Monday, March 13, 7:15--8:45PM) information: both sections will write the exam in WW 111 (Woodsworth College, 119 St. George Street).
March 6, 2006 :
Solutions to the fourth homework be found here .
March 10, 2006 :
Solutions to the fifth homework be found here .
The alternate exam time (for students with a conflict only) is Monday, March 13, 3--4:30PM at WB 144 (Wallberg Building--near College and St. George).
The exam will cover all the material on cardinality and on constructibility.
Extra office hours:
Friday March 10: Rosenthal (BA6188) 10-12; Korman (BA6168) 4-6.
Monday, March 13: Rosenthal (BA6188) 4-6; Pigott (SP209) 11-12; Korman (BA6168) 5-6.
March 21, 2006 : Solutions to the third midterm be found here . The mean is 73%.
March 22, 2006 : The sixth homework be found here . It is due April 3, in class.
March 27, 2006 : Some notes about topology can be found here (I corrected a few typos on April 8). Here is a nice book I found online.
April 10, 2006 : Final Exam Information. You are responsible for all the material covered in class during the year. The one exception is RSA coding, for which you are not responsible. Regarding topology, you are responsible for all the material up to and including the Intermediate Value Theorem and the basic properties of homeomorphisms. There are 10 questions on the final (some with multiple parts): 4-5 questions are on the topics covered in the first semester and the remaining questions cover topics from the second semester. There is one question about topology. Extra office hours before the final exam. Korman: Thursday, April 20, 2-5pm (Bahen 6168). Rosenthal: Sunday, April 23, 9am-12pm (Bahen 6183). Meet at the lobby of Bahen centre on St. Geroge Street at 9am. (If you are late, Prof. Rosenthal will come by the lobby at 10-10:05am and at 11-11:05am to let you into the Math Dept.) Korman: Tuesday, April 25, 2-5pm (Bahen 6168). Rosenthal: Thursday, April 27, 9-12 (Bahen 6188).
April 11, 2006 : The last homework assignment is now availlable for pickup outside your Prof.'s office (one student forgot to put his/her name on their assignment). Solutions to the last homework can be found here .
April 13, 2006 : Extra problems with solutions about topology can be found here . Solutions to the 2001 final can be found here . Solutions to the 2005 final can be found here .
April 21, 2006 : A few additions and corrections.
Added another (instructive) problem to the list of "extra problems with solutions about topology" above. Corrected solution to q.2 on the 2005 final. Gave a new solution to q.1 on the last problem set. Added a comment to the solution of 12(b) on the 2001 final. Updated the "Previous Exams" list.