MATH 345 Spring 2020
Linear Algebra
Archived Class
Charles Cusack
Mathematics
Hope College
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Schedule for weeks 1 through 16

Wk Day Date TopicResourcesEvents

1MonJan 06Course Introduction
n, n
Chapter 1.AProblems 1, 3, 5, 8, 13

WedJan 08Vector SpacesChapter 1.BProblems 1, 2, 4, 5

FriJan 10SubspacesChapter 1.C
  • Problems 1, 4, 5, 10, 12, 15, 16, 18, 19, 21, 22
  • HW 1 due

  • 2MonJan 13Span
    Linear Independence
    Chapter 2.A
  • Problems 1, 5, 6, 8, 9, 10, 11, 12, 13
  • HW 2 due

  • WedJan 15BasesChapter 2.B
  • Problems 1, 3, 5, 6, 7
  • HW 3 due

  • FriJan 17DimensionChapter 2.C
  • Problems 3, 4, 6, 10, 11, 12, 13, 17
  • HW 4 due

  • 3MonJan 20Linear MapsChapter 3.A
    (Re-read the proof of 3.5 until you fully understand it.)
  • Problems 1, 3, 4, 5, 6, 7, 10
  • HW 5 due

  • WedJan 22Null Spaces and RangesChapter 3.B
    (Re-read the proof of 3.22 until you fully understand it.)
  • Problems 3, 5, 6, 9, 11, 12, 14, 17, 21
  • Note: Write basis vectors of Rn as e1, ..., en instead of (1,0,...,0), etc.
  • HW 6 due

  • FriJan 24Null Space and RangeChapter 3.BHW 5 and HW 6 redo due

    4MonJan 27MatricesChapter 3.C
    (Put some thought into the motivation for matrix multiplication on pages 74-75.)
  • Problems 2, 3, 4, 7, 12, 13, 15
  • HW 7 due

  • WedJan 29Invertibility and Isomorphic Vector SpacesChapter 3.D
  • Problems 1, 2, 7, 8, 10, 11
  • HW 8 due

  • FriJan 31Products of Vector SpacesChapter 3.E (through page 93)
  • Problems 2, 3, 6
  • HW 9 due

  • 5MonFeb 03No class due to illness

    WedFeb 05PolynomialsChapter 4
  • Problems: 1, 2, 3, 4, 7
  • No HW due today!

  • FriFeb 07Chapter 1-3
  • Book
  • Notes
  • Test 1

    6MonFeb 10Winter RecessNo Class

    WedFeb 12Invariant SubspacesChapter 5.A (ignore quotient stuff)
  • Problems 1, 2, 3, 4, 6, 9, 11
  • No HW due again!

  • FriFeb 14Eigenvalues and EigenvectorsChapter 5.A
  • Problems 15, 19, 21, 23, 26
  • HW 10 due

  • 7MonFeb 17Eigenvectors and Upper-Triangular Matrices Chapter 5.B
  • Problems 1, 2, 3, 4, 6
  • HW 11 due

  • WedFeb 19More EigenstuffChapter 5.B
  • Problems 10, 14, 15

  • FriFeb 21Eigenspaces and Diagonal MatricesChapter 5.C
  • Problems 1, 2, 3, 6
  • HW 12 due

  • 8MonFeb 24Finish Eigenspaces, Diagonal MatricesChapter 5.C
  • Problems 8, 9, 11

  • WedFeb 26Inner Products and NormsChapter 6.A
  • Problems 1, 2, 4, 5 (Assume V is finite dimensional), 7, 8, 10

  • FriFeb 28Inner Products and NormsChapter 6.A
  • Problems 12, 13, 14, 16, 18 (Change x and y on the right to |x| and |y|), 22, 24, 31
  • HW 13 due

  • 9MonMar 02Orthonormal BasesChapter 6.B
  • Problems 1, 2, 3, 5 and 6
  • HW 14 due

  • WedMar 04Orthonormal BasesChapter 6.B
  • Problem 8, 10, 14

  • FriMar 06Orthogonal Complements and Minimization ProblemsChapter 6.C
  • Problems 1, 2, 3, 5, 9
  • HW 15 due

  • 10MonMar 09Orthogonal Complements and Minimization ProblemsChapter 6.C
  • Problems 9, 10
  • HW 16 due

  • WedMar 11Chapters 1-6
  • HW 17 due
  • Test 2

  • FriMar 13Spring Break!No Class

    Spring Break Week

    11MonMar 23AdjointChapter 7.A (pages 204-208)
  • Problems 1, 2, 3, 5

  • WedMar 25Self-Adjoint and Normal OperatorsChapter 7.A (pages 209-214)Problems
  • 7: Bethany
  • 8: Eric
  • 9: Kam
  • 12: Merideth
  • 13: Brandon
  • 16: Liam

  • FriMar 27The Spectral TheoremChapter 7.B
  • HW 18 due
  • Problems
  • 1: Adam
  • 2: Kam
  • 3: Marideth
  • 4, 5: Bethany
  • 6: Brandon

  • 12MonMar 30Chapter 7.B
  • HW 19 due
  • Problems
  • 7: Eric
  • 8: Adam
  • 9: Liam

  • WedApr 01
  • Positive Operators
  • Isometries
  • Chapter 7.C
  • HW 20 due
  • Problems:
  • 1: Merediθ
  • 2: Kam
  • 3: Bethany
  • 4: Eric
  • 5: Brandon
  • 6: Liam
  • 7: Adam

  • FriApr 03
  • Polar Decomposition
  • Singular Value Decomposition
  • Chapter 7.DProblems
  • 1: Eric (Hint: See Example 7.4)
  • 3: Liam
  • 4: Brandon
  • 5: Bethany
  • 7: Maredith (Hint: Find √(T*T) and then determine what S must be)
  • 8: Kam
  • 10:Adam

  • 13MonApr 06
  • Generalized Eigenvectors
  • Nilpotent Operators
  • Chapter 8.A (pages 241-247)
  • HW 21 due
  • Problems
  • 1: Bethany
  • 2: Adam (Hint: See Example 5.8A)
  • 3: MarryDeath
  • 4: Kam
  • 5: Eric
  • 16: Brandon
  • 17: Liam

  • WedApr 08Chapter 8.A (pages 248-249)
  • HW 22 due
  • Problems
  • 18: MareOfDeath
  • 6: Liam
  • 7: Brandon (Don't forget to prove that 0 IS an eigenvector)
  • 8: Adam
  • 9: Bethany
  • 13: Eric (Hint: use a homework problem to help)
  • 14: Kam (Hint: This is really simple if you use the proper earlier results)

  • FriApr 10Good FridayNo Class

    14MonApr 13Easter WeekendNo Class

    WedApr 15Decomposition of an OperatorChapter 8.BProblems
  • 1: Kam
  • 2: Brandon
  • 4: Meredeth
  • 5: Bethany
  • 6: Adam
  • 8: Eric

  • FriApr 17Characteristic and Minimal PolynomialsChapter 8.C
  • HW 23 due
  • Problems
  • 1: Bethany
  • 2: Eric
  • 3: Adam
  • 5: Kam
  • 7: Merudyth (typo in problem: T should be P)
  • 8: Liam
  • 11: Brandon
  • 16: Liam

  • 15MonApr 20Characteristic and Minimal PolynomialsChapter 8.CHW 24 due

    WedApr 22Jordan FormChapter 8.DProblems
  • 1
  • 2
  • 3
  • 6

  • FriApr 24EverythingReview

    ExTueApr 28Final Exam 12:30-2:30pm