Harvard University, Faculty of Arts and Sciences
Spring 2005

Mathematics 23b - Spring 2005

Theoretical Linear Algebra
and Multivariable Calculus

Instructor: John Boller
Office:  Science Center 320
Email: boller@math.harvard.edu

 


 

Welcome to Math 23b!

Math 23a and 23b are theoretical courses in linear algebra and multivariable Calculus, respectively, the main purpose of which are to introduce the student not only to the content and application of these areas but also to the nature of the mathematical reasoning behind them.

These are challenging courses, but you do not need to be a mathematics concentrator in order to take them. If you need advice about whether to take these courses or about other courses such as Math 25a and 25b or Math 21a and 21b, please see an advisor in the Mathematics Department.

Announcements for Math 23b:

Final Exam this Tuesday (tomorrow!), May 24, at 9:15 A.M. in Harvard Hall 104. Get some sleep!

The in-class midterm (part 2) has been graded and is available to be collected during office hours.
The mean was 21.4 and the median was 23 (out of 26).

The in-class midterm (part 1) has been graded and is available to be collected during office hours.
The mean was 58.5 and the median was 60 (out of 77). Here is a solution set.

The Final Exam is scheduled for Tuesday, May 24, at 9:15 A.M. in Harvard Hall 104.
Here are the five preview questions.

To help you prepare, here are the 2004 Final, the 2003 Final, and the 2002 Final.
For further study, here are some relevant past exams from previous editions of Math 23a and 23b.
(Note that a portion of this material had been covered in Math 23a in previous years.)
Math 23b Midterm 2004, Part 2
Math 23b Midterm 2004, Part 1
Math 23b In-class Midterm 2003 with Solutions
Math 23a In-class Final 2002
Math 23b In-class Midterm 2002
Math 23a In-class Final 2001

Here is the statement of Stokes' Theorem.

Here is the formal definition of a manifold.

Here is the proof of the Inverse Function Theorem.

A cleaned up version of the last proof (a set A in Euclidean space is closed if and only if it contains its limit points) from class on Wednesday (2/9) can be found here.

The required textbooks are "Matrices and Linear Algebra," by Hans Schneider and George Phillip Barker (Dover, ISBN # 0-486-66014-1) and "Advanced Calculus of Several Variables," by C.H.Edwards, Jr. (Dover, ISBN # 0-486-68336-2), though we will mostly be using the latter this semester, beginning in Chapter I.7 and moving through Chapter IV.

For additional reading on many topics in the course, please see the Math 23b Bibliography. In 2001-02, we used Shilov and Edwards, and in 2002-03, we used Curtis and Fitzpatrick as our primary textbooks.

Sections and office hours with our five course assistants can be found here .

 

Course Materials:

Useful Links:

Course Information

Math Department Undergrad Info Page

Course Syllabus

Math Department Home Page

Joe's Notes on Proofs

Harvard Home Page

Homework #1     Solutions: A, B, C, D, E
Homework #2     Solutions: A, B, C, D, E
Homework #3     Solutions: A, B,      D, E
Homework #4     Solutions:     B, C
Homework #5     Solutions: A, B, C, D, E
Homework #6     Solutions: A, B, C, D
Homework #7     Solutions: A, B, C, D
Homework #8     Solutions: A, B, C, D
Homework #9     Solutions: A, B, C, D
Homework #10   Solutions: A, B, C, D
Homework #11 (Moral Homework--not to be turned in)

Announcements for Math 23a:

The final exam took place on Wednesday, January 19. It has been graded and is available to be picked up during my office hours. Here were the five preview problems.

Here are the true/false problems that Daniel covered in his review session with answers.

Here are final exams from the past three years: Fall 2001, Fall 2002, and Fall 2003, with True/False solutions for 2002 and 2003. Please note that different topics were covered in different years. This year, for example, we have not yet covered the topology of Euclidean space, which includes the notions of open, closed, and compact sets.

Due to popular request, here are three past midterms again and, alas, still only two past solution sets:  
Fall 2001 Midterm

Fall 2002 Midterm

Fall 2002 Solutions

Fall 2003 Midterm

Fall 2003 Solutions

The in-class midterm has been graded and is available to be picked up during office hours.
The mean and median were both 59, and here is a solution set.
Here is the take-home portion of the midterm, including the fifth and sixth problems.

The required textbooks are "Matrices and Linear Algebra," by Hans Schneider and George Phillip Barker (Dover, ISBN # 0-486-66014-1) and "Advanced Calculus of Several Variables," by C.H.Edwards, Jr. (Dover, ISBN # 0-486-68336-2).

For additional reading on many topics in the course, please see the Math 23a Bibliography. In 2001-02, we used Shilov and Edwards, and in 2002-03, we used Curtis and Fitzpatrick as our primary textbooks.

 

Course Materials:

Useful Links:

Course Information

Math Department Undergrad Info Page

Course Syllabus

Math Department Home Page

Joe's Notes on Proofs

Harvard Home Page

Homework #1     Solutions: A, B, C, D
Homework #2     Solutions: A, B, C, D, E
Homework #3     Solutions: A, B, C, D, E
Homework #4     Solutions: A, B, C, D, E
Homework #5     Solutions: A, B, C, D, E
Homework #6     Solutions: A, B, C, D, E
Homework #7     Solutions: A, B, C, D, E
Homework #8     Solutions: A, B, C, D, E

Please send comments to John Boller. Reference Math 23 in your subject.
URL:  http://abel.math.harvard.edu/~boller/M23/index.html
last updated:  May 13, 2005

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