Instructor |
Dragos Oprea
|
Lectures: |
MWF, 3pm-3:50pm, AP&M 5-402. |
Office hours: |
Wednedays and Fridays from 2-3pm in
AP&M 6-101. I am
available for questions after lecture or by appointment. Also, feel free
to drop in if you see me in my office. |
Course Assistants |
Robert McGuigan
|
Course Content |
This course is the third in the Mathematics Department's
Honors
sequence, Math 31H. Topics include: change of variables formula,
integration of
differential forms, exterior derivative, generalized Stoke's theorem,
conservative vector fields, potentials.
|
Prerequisities: |
Math 31BH with a grade of B-
or
better. |
Grade Breakdown | The grade is computed as the following
weighed average: - Homework 20%, Midterm I 20%, Midterm II 20%,
Final Exam 40%.
|
Textbook: | J. H. Hubbard and B. B.
Hubbard, Vector
Calculus, Linear Algebra, and Differential Forms: A
Unified Approach, Fourth Edition. |
Readings | Reading the sections of the textbook
corresponding to
the assigned homework exercises is considered part of the homework
assignment. You are responsible for material in the assigned reading
whether or not it is discussed in the lecture. It will be expected that
you read the assigned material in advance of each lecture. |
Homework |
Homework problems will be assigned on the
course
homework
page. There will be 8 problem sets, due certain Fridays at 4:30PM
in
the TA's mailbox. You may work together with your classmates
on your
homework
and/or ask the TA (or myself) for
help on assigned homework problems. However, the work you turn in must be
your own. No late homework assignments will be accepted.
|
---|
Midterm Exams | There will be two midterm exams given
on April 26 and May 24. There will be no makeup
exams. |
Final Exam | The final examination will be held on Wednesday, June 12, 3PM - 6PM. There is no
make up final
examination. It is your responsability
to ensure that you do not have a schedule conflict during the final
examination; you should not enroll in this class if you cannot
sit for the final examination at its scheduled time. |
Announcements and
Dates |
- Monday, April 1: First lecture
- Friday, April 26: Midterm I
- Friday, May 24: Midterm II
- Monday, May 27: Memorial Day. No class
- Friday, June 7: Last Lecture
- Wednesday, June 12: FINAL EXAM, 3-6PM
pm
|
Exams |
|
Lecture Summaries | -
Lecture 1: Fubini's theorem and iterated integrals. Changing the order
of integration. Examples. The volume of the ball in n-dimensions.
- Lecture 2: Determinants. Expansion along first column.
Existence of determinants of multilinear, antisymmetric, normalized
functions.
- Lecture 3: Uniqueness of the determinant
function. Column operations. Determinants of invertible matrices are
nonzero. Determinants can be expanded along any column. Determinants of
products are products of determinants.
- Lecture 4:
Permutations. Signature of permutations. Determinants via
permutations. Row expansion and row operations. Eigenvalues revisited.
Characteristic polynomials. Eigenvalues add up to the trace, and multiply
to the determinant. Cayley-Hamilton theorem.
- Lecture 5:
Diagonalizable matrices via eigenvalue multiplicities. Similar matrices.
Similar matrices have the same characteristic polynomials, eigenvalues,
trace, determinant. Examples.
- Lecture 6: Volumes and determinants. Linear
transformations and volumes. Examples: volume of
ellipsoids,
area of ellipses. k-dimensional volumes of parallelograms in R^n.
- Lecture 7: Linear change of variables and proof. Arbitrary
change of coordinates and Jacobians. Examples. Polar coordinates.
- Lecture 8: Cylindrical coordinates. Spherical coordinates.
Volume in cylindrical and spherical coordinates. Examples.
- Lecture 9: Parametrizations of manifolds. Graphs. Surfaces of
revolution. Examples: paraboloids, torus.
- Lecture 10: Volume of paremetrized manifolds. Examples:
length, graphs, surfaces of revolution. Examples: surface area of
paraboloid, surface area of the torus.
- Lecture 11: More example of surface area. Area in spherical
coordinates. k-forms in R^n as multilinear and alternating functions of
k-vectors. The standard k-forms.
- Lecture 12: All forms can be expressed in terms of the
elementary forms. Wedge product and examples. Form fields (or
differential forms).
- Lecture 13: Integration of k-form fields over parametrized
domains in R^n. Pullbacks of differential forms. Examples.
- Lecture 14: Orientation of bases in R^n. Change of basis
matrix. Examples.
- Lecture 15: Orientation of manifolds. Generalizing the right
hand rule by means of determinants. Normal vectors determine an
orientation. The case of manifolds described by global equations.
Orientation via non-vanishing top forms.
- Lecture 16: Integration over oriented manifolds. Orientation
preserving parametrizations. Examples.
- Lecture 17: Orientation preserving diffeomeorphisms.
Reparametrizations. Proof that the integral is independent of
parametrization.
- Lecture 18: Applications of forms to physics. Vector
fields, work form, flux form, Faraday form.
- Lecture 19: Examples of flux, flux in spherical
coordinates. Flux, work, wedge product and cross product.
- Lecture 20: Exterior derivative of forms. Exterior derivative
and wedge products. Square of the exterior derivative. Divergence and
curl. Connection between divergence, curl, work, flux.
- Lecture 21: Divergence and curl of the gravitational field.
Piece of a manifold, boundary, orientation of the boundary.
- Lecture 22: Generalized Stokes' theorem. The fundamental
theorem of calculus is a particular case. Proof for surfaces in R^n.
- Lecture 23: Applications of Stokes' theorem. The fundamental
theorem of calculus for line integrals. Gradient fields and path
independence.
- Lecture 24: Green's theorem for work and flux and connection
with curl and div respectively. Path independence of work and flux means
zero curl and div respectively. Potentials.
- Lecture 25: Interpretation of curl and div. Gauss' theorem and
examples. The classical Stokes theorem.
- Lecture 26: Examples of Stokes' theorem. Review.
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