Math 113: Linear Algebra and Matrix Theory
In Fall 2015 I taught Math 113 at Stanford University. The course assistant was
Guanyang Wang. For questions about the material and class discussions, we used the Math 113 Piazza page.
Homework:
The midterm exam (solutions), and practice midterm (solutions), and the final exam.
Material covered:
- Week 1: Chapter 1A, 1B, 1C
- Online assignment #1 (due Sunday 9/27): read 2A
- Week 2: Chapter 2A, 2B, 2C, 3A
- Online assignment #2 (due Sunday 10/4): read 3A, 3B, 3C
- Week 3: Chapter 3B, 3C, 3D
- Online assignment #3 (due Sunday 10/11): read 3E, 3F, 5A
- Week 4: Chapter 5A, 3F (no annihilators), 3E (quotients only)
- Online assignment #4 (due Sunday 10/18): read 5B, 5C, and p262–267 on minimal polynomial (skip 8.48); review p122–125 on polynomials if necessary
- Week 5: Chapter 5A, 5B, 5C, 8.C (no characteristic polynomial)
- Week 6: Chapter 5C, 6A, 6B
- Online assignment #6 (due Sunday 11/1): review Chapter 6A through p169, read 6B, 6C
- Week 7: Chapter 6B, 6C, 7A
- Online assignment #7 (due Sunday 11/8): read 7A and statements of Complex/Real Spectral Theorems in 7B
- Week 8: Chapter 7A, 7B, summary of 7C
- Online assignment #8 (due Tuesday 11/17): read Sections 1 (The space of k-wedges) and Section 2 (Wedge Dependence and Independence) of these notes
- Week 9: Sections 1, 2, 3 of Notes on k-wedges and determinants
- Week 10: Jordan form; SVD (image recovery slides: 1, 2, 3); Bell's inequality and linear algebra in quantum mechanics.
The full syllabus for the course is available here.
Course description: Math 113 is a course on linear algebra, the study of vector spaces and linear maps. The emphasis will be quite theoretical: we will study abstract properties of vector spaces and linear maps as well as their geometric interpretation, mostly ignoring the computational aspects. If you are more interested in applications of linear algebra, you should consider taking Math 104 instead.
Besides studying linear algebra, an important goal of the course is to learn how to write mathematics. In class we will give rigorous proofs, emphasizing proper mathematical language and notation. Through the homework assignments, you will learn to apply mathematical reasoning and write clear, compelling and correct proofs yourself. Your homework and exams will be judged accordingly. No background in linear algebra or proofs is assumed, and there are no formal prerequisites for the course; Math 113 is appropriate for students who have already seen some linear algebra in Math 51.
Textbook: Sheldon Axler, Linear Algebra Done Right (3rd ed), required.
Further resources:
- Statement from the Registrar concerning students with documented disabilities: "Students who may need an academic accommodation based on the impact of a disability must initiate the request with the Student Disability Resource Center (SDRC) located within the Office of Accessible Education (OAE). SDRC staff will evaluate the request with required documentation, recommend reasonable accommodations, and prepare an Accommodation Letter for faculty dated in the current quarter in which the request is being made. Students should contact the SDRC as soon as possible since timely notice is needed to coordinate accommodations. The OAE is located at 563 Salvatierra Walk (phone: 723-1066)."
- Stanford's Honor Code and Fundamental Standard.