Math 485: Representation
Theory

Spring 2017

Weekly Quiz 1-3 Answer Keys

The syllabus for Math 485 is linked. Much of that information is repeated bellow (but not all of it, so read the syllabus!)

Instructor

Rebecca E. Field

fieldre@math.jmu.edu

(540) 568-4962

Office: Roop 114

Office Hours: MWF 2:20-3:20pm, Tu 12:00-2:00pm

Also by appointment

(I can make appointments for Tuesdays, but am not available on Thursdays)

Suggested Reading

Algebra by Michael Artin (1991)

Course summary:

This is a special topics course on a topic in abstract algebra that is usually not taught to undergraduates, but is useful, fascinating, and accessible, so why not? Also, you'll definitely see it in grad school, and since large portions of mathematics are secretly linear algebra, it ends up being very important. Representation Theory is about all of the various ways to write a group as a subgroup of a (in our case, finite dimensional) matrix group over a field (in our case, often, though not always, $\u2102$).

Here is my most important piece of advise about this course: DO NOT FALL BEHIND!! This includes things like DO NOT MISS CLASS!! (If you must miss a class, get notes from one of your classmates*and read them*
before the next class.) It also includes
things like DO YOUR HOMEWORK!! It is not
possible to actually learn this material without
doing problems. You might be able to convince
yourself you understand, but if you can't do
problems, you aren't at the level of understanding
required to pass the class. In fact, if the
class seems too easy at any point, do extra
problems!

Spring 2017

Weekly Quiz 1-3 Answer Keys

The syllabus for Math 485 is linked. Much of that information is repeated bellow (but not all of it, so read the syllabus!)

Instructor

Rebecca E. Field

fieldre@math.jmu.edu

(540) 568-4962

Office: Roop 114

Office Hours: MWF 2:20-3:20pm, Tu 12:00-2:00pm

Also by appointment

(I can make appointments for Tuesdays, but am not available on Thursdays)

Suggested Reading

Algebra by Michael Artin (1991)

Course summary:

This is a special topics course on a topic in abstract algebra that is usually not taught to undergraduates, but is useful, fascinating, and accessible, so why not? Also, you'll definitely see it in grad school, and since large portions of mathematics are secretly linear algebra, it ends up being very important. Representation Theory is about all of the various ways to write a group as a subgroup of a (in our case, finite dimensional) matrix group over a field (in our case, often, though not always, $\u2102$).

Here is my most important piece of advise about this course: DO NOT FALL BEHIND!! This includes things like DO NOT MISS CLASS!! (If you must miss a class, get notes from one of your classmates

Exams:

Big Quiz 1: Wednesday February 15, during class time

Midterm: week of March 22, evening

Big Quiz 2: Wednesday, April 12, during class time

Final: Wednesday, May 3, 10:30am-12:30pm

Homework:

Problem sets will be posted here as they are assigned.

Topics we will cover are roughly as follows:

Chapters 5&6: Group Actions on a Set

Chapters 4,7,&8: Linear Algebra Review

Chapter 9: Representation Theory of Finite Groups

Chapters 8&9: Lie Groups/Lie Algebras

Big Quiz 1: Wednesday February 15, during class time

Midterm: week of March 22, evening

Big Quiz 2: Wednesday, April 12, during class time

Final: Wednesday, May 3, 10:30am-12:30pm

Homework:

Problem sets will be posted here as they are assigned.

Homework 1
(short, 3 easy proofs, 3 examples) due Monday,
January 23 (weekly quiz 1 is also Monday,
January 23)

Homework 2 (more group actions) due Wednesday, February 1

Homework 3 (bilinear forms) due Friday, February 10

Homework 4 (representations, hermitian forms, and Haar measure) due Monday, February 20

Homework 5 (characters), due Wednesday, March 29

Homework 2 (more group actions) due Wednesday, February 1

Homework 3 (bilinear forms) due Friday, February 10

Homework 4 (representations, hermitian forms, and Haar measure) due Monday, February 20

Homework 5 (characters), due Wednesday, March 29

LaTeX:

I'm requiring that students type set their assignments using LaTeX. Here is a link to a LaTeX Setup and Tutorial along with a sample document and its source code.

I'm requiring that students type set their assignments using LaTeX. Here is a link to a LaTeX Setup and Tutorial along with a sample document and its source code.

Extra
Help:

Please come by my office hours or make an appointment if you need extra help!

Please come by my office hours or make an appointment if you need extra help!

Topics we will cover are roughly as follows:

Chapters 5&6: Group Actions on a Set

Chapters 4,7,&8: Linear Algebra Review

Chapter 9: Representation Theory of Finite Groups

Chapters 8&9: Lie Groups/Lie Algebras