Math 416: Lecture Log and Homework Assignments

Homework assignments

All references are to the course textbook (Friedberg-Insel-Spence), by chapter and section, unless otherwise specified.

Daily readings are to be completed prior to the specified class period; daily problems are to be completed after the specified class period and before the subsequent class period.

Date Topics covered Daily reading Daily problems Remarks
1/14 Introduction to linear algebra Welcome to Math 416!
1/16 Systems of linear equations, elementary row operations, row echelon form, Gauss elimination III.4 III.4 #2(a)(b)(e)
1/18 Matrix arithmetic, elementary matrices, pivots, rank III.1, III.2
1/21 NO CLASS MLK Day
1/23 Invertibility, matrix inverses III.2 Guest lecturer: Prof. D'Angelo
1/25 Systems of linear equations, polynomial interpolation, definition of a vector space I.2 I.2 #1,17 Homework #1 due
1/28 Subspaces I.3
1/30 Span of a set, linear dependence and independence I.4, I.5 I.3 #11, I.4 #17
2/1 Bases, dimension I.6 I.6 #1(a)(b)(c)(d)(e)
2/4 Bases, dimension (continued) I.6 Homework #2 due
2/6 Existence of bases for general vector spaces, examples I.7
2/8 Linear transformations II.1
2/11 Kernel, range, Rank-Nullity theorem II.1 II.1 #19: give an example where
T and U are linearly independent
2/13 Matrix representation of a linear transformation II.2 Homework #3 due
2/15 Composition of transformations and matrix multiplication II.3
2/18 MIDTERM EXAM #1 (CHAPTERS 3 AND 1)
2/20 Dual spaces II.6 Guest lecturer: Prof. D'Angelo
2/22 Dual spaces (continued) II.6 Guest lecturer: Prof. D'Angelo
2/25 Bilinear functions IV.1, Handout
2/27 Multilinear functions, determinants IV.2, IV.3, IV.5 Homework #4 due
2/29 Multiplicativity, geometry of determinants IV.1, IV.3
3/3 Similarity of matrices, eigenvalues and eigenvectors II.5, V.1
3/5 Eigenvalues and eigenvectors (continued), characteristic polynomial V.1, V.2 Prove that trace(AB) = trace(BA)
Prove that determinant and trace are similarity invariants for nxn matrices
3/7 Eigenvalues and eigenvectors (continued), characteristic polynomial V.1, V.2 Homework #5 due
3/10 Diagonalizability, review for Midterm Exam #2 V.2 Practice Problems for Exam #2
3/12 MIDTERM EXAM #2 (CHAPTERS 2 AND 4)
3/14 Linear algebra and differential equations II.7, V.2
3/24 Inner products and norms VI.1
3/26 Cauchy-Schwarz inequality, triangle inequality, orthonormal bases VI.1, VI.2
3/28 Gram-Schmidt, orthogonal complements, existence of distance minimizers for finite-dimensional subspaces VI.2
3/31 Adjoint of a linear operator, Riesz Representation Theorem (finite-dimensional case) VI.3
4/2 Least squares approximation VI.3
4/4 Normal operators VI.4 Homework #6 due
4/7 Self-adjoint operators, simultaneous diagonalization VI.4
4/9 Unitary and orthogonal operators, geometry of Euclidean rigid motions VI.5, VI.11
4/11 Spectral Decomposition Theorem (finite-dimensional case) VI.6
4/14 Singular values and polar decomposition VI.7 Homework #7 due
4/16 Examples
4/18 MIDTERM EXAM #3 (SECTIONS 5.1, 5.2, 6.1, 6.2, 6.3, 6.4)
4/21 Cayley-Hamilton theorem, cyclic and invariant subspaces V.5
4/23 Minimal polynomials VII.3
4/25 Jordan canonical form VII.1
4/28 Jordan canonical form (continued) VII.1, VII.2
4/30 Review for the final exam Homework #8 due
Review Sheet and Practice Problems for the Final Exam
5/5 FINAL EXAM 1:30-4:30 IN 343 ALTGELD HALL

Homework assignments

Homework 1: due Friday, January 25

Homework 2: due Monday, February 4

Homework 3: due Wednesday, February 13

Homework 4: due Wednesday, February 27

Homework 5: due Friday, March 7

Homework 6: due Friday, April 4

Homework 7: due Monday, April 14

Homework 8: due Wednesday, April 30