MATH 223 Homepage, Spring 2019

This page concerns MATH 223--Honours Linear Algebra--Section 201.

This page has the most up-to-date information on the course(s) and supersedes any other document.

News	Office hours for Thursday, Feb 7: 2-3pm, Math Building room 210. Diversity news: Black History Month began in Canada on Friday, Feb 1; for example, anyone connected to the UBC wifi can watch (free of charge) I Am Not Your Negro (James Baldwin, posthumously), courtesy of Kanopy.
Overview	Basic course information and policy is given in course overview (PDF).
Textbooks and Resources	The first few weeks we will cover part Applications of Linear Algebra for Math 223; this is a work in progress and may be modified throught this term. We will also may refer to this article throughout the term. Otherwise we will mainly follow the course textbook (free to anyone with a UBC CWL): Linear Algebra, by Klaus Jänich. We may give additional references.
Office Hours	Instructor, Joel Friedman: By appointment for now--email me and let me know when you are free over the next few days. When things get too busy (e.g., near exams or otherwise) we will revert to fixed office hours. TA, Yu-Hsiang Liu: Wednesdays and Thursdays, 3:30-5pm, Mathematics Annex, room 1118.
Boards Scans, Etc.	Scan of boards for: 01_02 to 01_18 (Mainly on Sections 0 and 3 of Applications of Lin. Alg.); as we discuss polynomials as forming a ``vector space,'' you may find this Abstract vector spaces, Essence of linear algebra, 3BLUE1BROWN lecture helpful and/or amusing (at roughly 7:00 into the video, differentiation is described as a linear operator on polynomials). Starting 01_14 we will likely cover Sections 2,1,7 (in this order) of the Applications of Lin. Alg.; we began Section 2 on 01_11. 01_21 to present (Starting Chapters 2-4 of the textbook).
Software	At times, in class and on homework we will do simple matrix computations. In class I will use the recently developed Julia, and open source (free) software package that is developed primarily at the MIT Julia Lab, which is a member of the bigdata@CSAIL MIT Big Data Initiative. An alternative is MATLAB, which was the uncontested industry standard for decades (before Julia); MATLAB is a commercial product but (1) is available in our LSK310 computer lab, and (2) has a student version free to all UBC students; In class I will discuss how MATLAB syntax differs from Julia's in class [Another alternative is the open source (free) software GNU Octave, which provides some functionality similar to MATLAB, but the syntax is slightly different and its use is less prevalent; In class I will not discuss Octave syntax.
Homework	Late homework will not be accepted. Your three lowest scores will be dropped in the overall homework computation. Homework will generally be assigned on Thursday and due on the following Thursday at midnight; it should be submitted (electronically) via Canvas, as one single PDF for the whole assignment. Homework 1: Exercises 3.2, 3.3, 3.5, 3.7, 3.9 of the handout are due on Friday, Jan 18, 2am at canvas.ubc.ca; please submit the entire set as a single PDF file. Solutions. Homework 2: Exercises 3.10, 2.1--2.5 of the handout are due on Friday, Jan 25, 2am at canvas.ubc.ca. Solutions. Homework 3: is given here and due on Friday, Feb 1, 2am at canvas.ubc.ca. Please submit the last problem (problem 5) in TeX or LaTeX rather than writing by hand; you can use overleaf.com if you don't want to learn TeX/LaTeX from scratch. [The TA and I are happy to help you learn TeX/LaTeX or use overleaf.com] Starting with Homework 4, all homework must be submitted in LaTeX. Homework 4: is given here and is due on Friday, Feb 8, 2am at canvas.ubc.ca. Please submit all homework from this point on in TeX or LaTeX. Homework 5: is given here and is due on Friday, Feb 15, 2am at canvas.ubc.ca.
Useful Dates	Classes begin: Jan 2; classes end: April 4; midterm break Feb 18-22 (Family Day is Feb 18); final exams: April 8-26.
Diversity and Equity	UBC is trying in earnest to encourage diversity and alleviate biases and inequities to which some members of its community are subjected; this includes, for example, UBC's Indian Residential School History and Dialogue Center, and well as the Computer Science Department's various programs described on its Women in CS webpage. I try to act reasonably free of bias; for example, I do not view sexual orientation or gender as set in stone from birth or as classified by some fixed, finite set of choices; I try to use language accordingly. I will undoubtedly goof upon occasion, and I welcome feedback on these and related matters.

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