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Linear Algebra 1
MAT 223H

__ Professor: __ Mary Pugh, mpugh@math. utoronto.ca

__ Office hours: __
Wednesdays, 1:00-2:00, Thursdays, 11:00-12:00, ending November 27

Extra office hours: Monday Dec 8 11-12:30 & 4:30-6, and Tuesday Dec 9 10-11:30

Romuald Stanczak will have office hours Monday Dec 8 2-3 in New College 68A

Brian Robin will have office hours Monday Dec 8 10-11:30 and Tuesday Dec 9 11-12:30 in room 209, 1 Spadina Crescent
Zohreh Shahbazi will have office hours Tuesday Dec 9 11-1:00 in Sid Smith 4055

__ Office location: __ room 3141, Earth Sciences Centre,
22 Russell Street

**Caveat emptor.**
This is not the official course webpage.
The official course webpage is
here. Please go there to see if your questions are
answered there before asking me!

If you're going to send me email, please include "mat223" in the
subject line. Otherwise, there's a good chance my spam filter
will filter your email.

You should feel free to come to my office hours or to those of any
other lecturer.

My office hours are W 1-2, Th 11-12. My office is Earth Sciences
room 3141. (To find my
office, enter the building on the Northwest corner of Huron and
Russell. Get to the third floor. Walk as far south as you can.
Now walk as far west as you can.)

Yong Jung Kim's Th 2:10-3:50. His office is Earth Sciences
room 4143, just above my office.

Romuald Stanczak's office hours are M 10:30-11:30, Tu 3:15-4:15,
W 2:15-3:15, F 10:30-11:30. His office is in New College 68A. (Enter
from Huron, walk down the stairs to your left, turn left, walk down the
hall and go through the swinging doors. His office is to your left,
just next to the stairs.)
Brian Robin's office hours are M 10-11 and W 11-12. His office
is room 209, 1 Spadina Crescent. (1 Spadina Crescent is the huge
old cool building in the middle of the islands that's 50 yards north of
Spadina and College.)
Zohreh Shahbazi's office hours are Th 2-4. Her office is Sidney
Smith, room
4055.

**How to write a proof**
Here are
some notes on what proofs are and how to write them.

**Solutions to some problems from Chapter 1**
The problems in the book marked with a diamond have worked solutions
in the partial solution manual that you can buy in the bookstore.
Here
are the solutions to the non-diamond problems
of Chapter 1. Please let me know if you find any mistakes
in them!

**A mistake in the book** One of your classmates, Ying Di, found a mistake
in the book. In example 10 on page 45, the basic solution X1 should be
(3 1 0 0 0)^T. Not, as written, (3 1 0 0 1)^T. This mistake occurs in the
representation directly above --- the (5,1) entry of the matrix that
the scalar r is multiplying should be a 0, not a 1.

**Information about Term Exam**
The test contains 10 multiple choice questions and 4 open questions
with two parts each. The understanding of
all concepts will be primary requirement.
Half of the test comes from sections 5.1 and 5.2
(with Insert A counting as a part of 5.1).

**A mistake in the book**
In the proof of theorem 2 on page 319, the book refers to
"theorem 5 in section 5.5". This should be theorem 5 in section
5.2.

**Solutions to the problems in Insert B**
Click
Here!

** Math Aid Center hours before the Final Exam**
The Math Aid center will have its last day for Mat223 on Monday
December 1.

** Office Hours before the Final Exam**
My last regular office hour will be November 27. I will hold office hours
to help you prepare for the final exam as follows:
Monday December 8, 11:00-12:30, 4:30-6:00.
Tuesday December 9, 10:00-11:30.
Also, Romuald Stanczak will have office hours Monday Dec 8, 2-3 in New College 68A.
And Brian Robin will have office hours Monday Dec 8 10-11:30 and Tuesday Dec 9 11-12:30 in Room 209, 1 Spadina Crescent.
And Zohreh Shahbazi will have office hours Tuesday Dec 9 11-1:00 in Sid Smith 4055

**Information about Final Exam** Your final exam is three hours long.
The final exam has 100 points possible. It has twelve multiple choice questions, worth forty-eight points in all. There
are four open
questions, worth 52 points in all.
It
will be on Tuesday December 9th from 2pm to 5pm. It will be held in the Benson
building on the south-west corner of Huron and Harbord (320 Huron St).
If your last name begins with A-Ho then you'll be taking the exam in
BN3 (Upper Small Gymnasium, Third Floor).
If your last name begins with Hs-P then you'll be taking the exam in
BN2N (Large Gymnasium, North End, Second Floor).
If your last name begins with Q-Z then you'll be taking the exam in
BN2S (Large Gymnasium, South End, Second Floor).

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