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Welcome to Linear Algebra!

Among other things make sure you actually read the somewhat lengthy course syllabus. Announcements, especially regarding things like term test information will be posted below. As well, there is a calendar you can view below.

Announcements

  • December 10: Your TA, Sheldon, will hold extra MAC hours from 12-4PM on Friday, December 15.
  • December 6: Here is a list of topics considered fair game for the upcoming final exam.
  • November 29: Here are some extra problems to give you more practice in preparation for the final exam.
  • November 29: Here is a study guide written by former MAT223 prof Leung for last semester's final exam prep.
  • November 29 Here is a Practice Final. There are a number of things you need to keep in mind. Among these you should not take the difficulty or style of the practice test as any kind of guarantee of difficulty/style of the actual test. The practice test was written before the actual test, so the actual test is, well, a different sort of animal. As before:

    No, I will not be posting solutions to the practice test. You should be able to work out, after have taken it, what the correct answers ought to be. If not, that's why we have tutorials, office hours, piazza etc etc.

    You only get one shot at a practice final, so if you blow off my well-intended instructions and don't do well on the actual test don't say you weren't advised to do otherwise. If it were me, I'd follow the instructions.
  • November 29: There will be some REVIEW SESSIONS coming soon.
    • Prof Hoell will hold a review session on Friday, December 8, from 2-4PM in SF1105
    • Prof Horowitz will hold a review session Tuesday, December 12, from 5-7PM in BA1130
    • Darren Pereira will hold a review session Wednesday, December 13 from 3-5PM in SS2117. You are encouraged to attend and bring lots of questions.
  • November 24: Next quiz will cover dimension and rank material.
  • November 17: Next quiz will cover dimension, rank, and bases material.
  • November 17: A new TopHat homework has been posted, due December 1 at 12:01AM.
  • November 12: Here are answers fo the second test.
  • November 11: The quiz this week will cover subspaces.
  • October 29: Here are solutions fo the first test.
  • October 26: Here is a Practice Midterm. There are a number of things you need to keep in mind. Among these you should not take the difficulty or style of the practice test as any kind of guarantee of smilar difficulty/style of the actual test. The practice test is, well, a different sort of animal altogether from the actual test. That said, I still believe that this will give you excellent practice. Some other things to consider:

    You only get one shot at a practice midterm so strongly suggest you do as the instructions indicate and simulate the test environment as well as possible. It is a "dry run" and if you don't use it as such you'll not be getting the most out of it.

    No, I will not be posting solutions to the practice test. You should be able to work out, after have taken it, what the correct answers ought to be. If not, that's why we have tutorials, office hours, piazza etc etc.

    No, I will not be discussing previous years exams, or solutions, or whatever.

    Not listening to the above, and especially, any hint of complaint that the actual test wasn't well represented by the practice test, are near certain to result in my never posting this kind of thing again.

  • October 26: ***MIDTERM INFO***The midterm ROOM LIST is now up. Look it over.
    There is an alternate seating available also on Friday, November 3 from 3:10-4PM. The only way you can write in the alternate seating is by doing the following.
    1. Send me an email by 11:59PM October 30 containing a screenshot (or pdf) from your ROSI/ACORN where your name and student number are visible and clearly show a regularly scheduled class or lab at University of Toronto which overlaps with the midterm. If you send me such an email on October 3, you won't be seated in the alternate seating. Your email must contain the words "MAT223 Test Conflict" in the subject line.
    2. If in fact it is a course conflict, I'll give you the location for the alternate seating.
    As discussed on the website having other midterms that day (with times not overlapping ours) does *not* count as a conflict allowing you access to the alternate seating. Moreover, as discussed, there is no makeup midterm.
    I will be posting a practice midterm later this week as well as a list of topics you are expected to know.
  • October 26: Here is a list of TOPICS to help you prepare for the upcoming midterm.
  • October 21: A new homework has been posted on TopHat. It covers material which we have not seen in most lectures but you can get a head start if you wish. The topics included involve rank, dimension, and Gram-Schmidt orthogonalization among others. The due date is November 6.
  • October 20: Next week's quiz covers transformations.
  • October 10: Artane's hours in the MAC this week are cancelled. He will be there next Monday from 1-3 instead.
  • October 7: Upcoming quiz will cover material on spans and solvability, material from 1.4/1.5.
  • October 2: This week's quiz will be on material related to vectors i.e. norms, dot products, etc.
  • September 28: If you want to change tutorial groups on Blackboard, that feature is enabled and you don't need our help in doing it. That said there are some IMPORTANT CAVEATS. If you switch from one tutorial group to another, prior to your original TA entering marks for any quizzes you may have taken in your original group, those marks cannot be entered. In this case it is the student's responsibility to arrange with the old and new TAs to have their quiz scores kept track of. Namely, you'll need to be sure that your old TA can contact your new TA so any outstanding quiz marks will be put in the grade centre. Since the feature is enabled we will not do this for you. Also, as stated countless times in the syllabus, emails and on this page, we don't care about what's on ACORN/ROSI the only thing that matters is you being in the right group on Blackboard/Portal (which you don't need our help to do). Emails about this won't be responded to.
  • September 27: Here is a Practice Midterm. There are a number of things you need to keep in mind. Among these you should not take the difficulty or style of the practice test as any kind of guarantee of smilar difficulty/style of the actual test. The practice test is, well, a different sort of animal altogether from the actual test. That said, I still believe that this will give you excellent practice. Some other things to consider:

    You only get one shot at a practice midterm so strongly suggest you do as the instructions indicate and simulate the test environment as well as possible. It is a "dry run" and if you don't use it as such you'll not be getting the most out of it.

    No, I will not be posting solutions to the practice test. You should be able to work out, after have taken it, what the correct answers ought to be. If not, that's why we have tutorials, office hours, piazza etc etc.

    No, I will not be discussing previous years exams, or solutions, or whatever.

    Not listening to the above, and especially, any hint of complaint that the actual test wasn't well represented by the practice test, are near certain to result in my never posting this kind of thing again.

  • September 27: Here is a list of TOPICS to help you prepare for the upcoming midterm.
  • September 26: ***MIDTERM INFO***The midterm ROOM LIST is now up. Look it over.
    There is an alternate seating available also on Friday, October 6 from 3:10-4PM. The only way you can write in the alternate seating is by doing the following.
    1. Send me an email by 11:59PM October 2 containing a screenshot (or pdf) from your ROSI/ACORN where your name and student number are visible and clearly show a regularly scheduled class or lab at University of Toronto which overlaps with the midterm. If you send me such an email on October 3, you won't be seated in the alternate seating. Your email must contain the words "MAT223 Test Conflict" in the subject line.
    2. If in fact it is a course conflict, I'll give you the location for the alternate seating.
    As discussed on the website having other midterms that day (with times not overlapping ours) does *not* count as a conflict allowing you access to the alternate seating. Moreover, as discussed, there is no makeup midterm.
    I will be posting a practice midterm later this week as well as a list of topics you are expected to know.
  • September 25 I've gotten a pdf file of the course notes which the TopHat text is based on. This doesn't include any of the interactive questions and may have typos in a few spots bu hopefully is still helpful. It does have all the end-of-chapter questions which you'll find on TopHat.
  • September 24: The TopHat extra questions from the "Geometry of Vectors" chapter is available here.
  • September 22: Tutorials begin next week as well as regular MAC hours which appear on the calendar below (make sure you read the August 9 announcement about the calendar time zone issue). The first quiz covers material from sections 1.1 and 1.2 of the textbook.
  • September 20: Question 26 in Assignment 2 had an autograde error (the correct answer is "false" but it was giving "true"). For this reason that question will not be counted towards your score. There was a similar problem with questions 2 and 11. In general if there are mistakes in the wording or autograding for any problem that problem will not be counted towards your score at the end of term. Thanks to careful students who have caught typos.
  • September 19: Those in Prof Horowitz' LEC5101 lecture section be advised, there will be no class meeting this Thursday, September 21. Prof Horowitz will be holding a make-up lecture on December 7.
  • September 17: Since we will be covering topics from there during upcoming lectures I decided to post the chapter on "Geometry of Vectors" to TopHat. The corresponding homework is due September 30 but this way you can read along during the week if you like.
  • September 17: I still get requests for helping with signing into a tutorial group. For this please read the September 14 announcement. You'll need to find the UT Groups Self Sign-Up Tool.
  • September 15: A second homework is now available on TopHat, due by September 23. In this and all future homework, only your first attempt at the answer will be counted towards your score so the questions may require more thought. The first homework gave unlimited attempts and grades based on participation. Also, as always, there is nothing to hand in, everything is done online.
  • September 14: As mentioned in the syllabus, for this class we use Blackboard Groups for the tutorials. This means, as it says in the syllabus, you have to self-enroll in a tutorial Group on Blackboard. It does not matter what it says on ACORN/ROSI, if you are not self-enrolled in a Blackboard Group we cannot enter marks for your quizzes once the tutorials begin on September 26. I have recently created the Blackboard Groups and you should now add yourself to the group you wish to be in based on your selection from when you registered. Blackboard and ACORN/ROSI do not sync automatically and therefore even if you've already registered on ACORN/ROSI you must still sign up in Blackboard. To do this you'll have to go to Tools and you'll see a UT Groups self sign-up tool and use it. You should sign up for the Group in which you registered through ACORN/ROSI. The instructors and TAs will not do this for you. I would do this right now otherwise you may forget later.
  • September 13: Instructor Office Hours are now up on the Calendar as well as in here
  • September 11: Prof. Siefken's lecture section L0101 uses several additional materials as part of the classroom learning. Prof Siefkin's lectures use material from these notes which you may find helpful. There may be video content provided as well, which is posted in the corresponding module in Blackboard.
  • September 8: The first assignment (covering introductory background material) has now been posted in TopHat and due 9PM on September 16.
  • September 7: TopHat seems to have fixed the pricing bug and the text is now available. Go to https://app.tophat.com/e/267444 to purchase the text. The text is available for just under $40 after taxes. If you have problems require assistance with Top Hat at any time or cannot see the price as described, they require specific user information to troubleshoot these issues so you can contact their Support Team directly by way of email (support@ tophat.com), the in app support button, or by calling 1-888-663-5491.
    When you log into the course on TopHat you will not see course content. The content becomes available as the semester progresses. The first content and homework will be posted next week.
  • September 6: Don't purchase the TopHat text for this course yet until an announcement is made to ensure you get the lowest price as the prices have been modifed.
  • August 29: This term we will be using Piazza for class discussion. It is now active so please enroll. I encourage you to post your questions on Piazza. If you have any problems or feedback for the developers, email team@piazza.com. Find our class page at: https://piazza.com/utoronto.ca/fall2017/mat223h1f/home
  • August 9: PLEASE READ this important remark about the calendar below. Google calendars has a quasi-infamous bug which affects time zones. I have tried very hard to deal with the calendar listed on the bottom of this page to ensure that the listed times don't vary based on the individual visiting the site. At this point I have invested far more hours than I care to admit trying to debug this, so that students will always see an accurate time when they view the calendar. I've discovered that I still have not resolved the issue. So I have some thoughts/solutions.
    • On the one hand, I could solve everything by not having the calendar at all. No calendar = no confusion.
    • On the other hand, the students/instructors for whom the display is in the wrong time zone are far from the majority. To most users, the feature is quite helpful and gives a lot of information in a short amount of time on events happening at any given time.
    • I decided therefore to keep the calendar but augment it with a calibration. Namely, there is an event, on every Monday which says it should read 12PM on that Monday. If you see the listed event being listed on your viewing computer/device as not being on Monday at 12PM then it is YOUR responsibility to factor that into all listed times. For example, if the event marked "This time should read 12PM" appears on your device to take place at 1PM, this means all events you see must be adjusted accordingly (i.e. 1 hour previous). I take no responsibility for you not heeding this warning.

Course Coordinator

Nicholas Hoell is coordinator for MAT223 and instructors for lecture sections 0201 and 0301.

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Motivation

"This is how scientists view the world." In this course we'll begin you on the long process of helping you translate the symbology appearing in the cartoon.