**Course outline:**
Homotopy, fundamental group, Van Kampen's theorem, covering spaces,
simplicial and singular homology, homotopy invariance, long exact
sequence of a pair, excision, Mayer-Vietoris sequence, degree, Euler
characteristic, cell complexes, projective spaces. Applications
include the fundamental theorem of algebra, the Brouwer fixed point
theorem, division algebras, and invariance of domain.

**Instructor:**Dan Christensen**E-mail:**`jdc@uwo.ca`

**Office:**Middlesex 103b.**Office Phone:**519-661-2111 x86530.**Cell Phone:**, to be used only for urgent matters, e.g. to debug connection problems during a lecture.**Office Hours:**Mondays, 11:30-noon. I will be available on Google Hangouts during this time as well, for UWO or York students.**Class times and location:**MWF 10:30-11:30, MC107 / Google Hangouts, starting on Monday, January 4 and ending on Wednesday, April 6.**Prerequisites:**Group Theory (Math 3120) and General Topology (Math 3132 or Math 4121). Students are responsible for verifying that they have the correct prerequisites; please contact me if unsure.**Web page:**This page is available at http://jdc.math.uwo.ca/M9052, where you should also check for course announcements and updates.

**Participants from York:** I will be using a Google Hangout
to share my screen with you for this course, and this should be
arranged in the classroom without you needing to do anything.

**Text:** The text for the course is
*Algebraic Topology*, by Allen Hatcher.
Published by Cambridge University Press.
ISBN 0-521-79540-0.
The book will be available at the UWO bookstore, and is
also available
online.
The book's webpage also contains a list of errata for the printed copy.

We will cover parts of chapters 0, 1 and 2, and possibly some of 3. The textbook is a
valuable resource that gives more examples and details than can be
given during lecture. Students are expected to **read the text book,
going over what we have covered, reading ahead to what comes next,
and studying additional examples**.

Here is a list of other reading material. None of these are required, but you might find them interesting. Most of these are available in the library. I haven't put them on reserve, so share with other students.

**Homework:** Homework will be due every two weeks,
at the start of class.
(E-mail submission of a scan or pdf file is fine, but must be on time.)
Doing problems and talking about the
material are both essential for learning the material in this course,
so you are encouraged to **discuss**
the problems with classmates and with me.
But you must write up the solutions **on your own** and must not
look at other students' written solutions nor should you attempt to
find solutions to problems online or in textbooks.
Your solutions should be **clear** and **carefully written** and
you should give **credit** to
those who helped you and to any references you used.
Homework will be graded based on both correctness and clarity.
Late problem sets will not be accepted unless arranged in advance
for a good reason.

**Copying solutions** from other students, online sources,
textbooks, etc., or showing your work to other students
constitutes a scholastic offense and will result
in a grade of **negative 100%** for the assignment and in some cases
expulsion from the program.
All academic offenses are added to your student record.

**Final exam:** Thursday, April 14, 1:00-4:00, MC108.

**Evaluation:** 50% homework, 50% final exam.
(An earlier version of this outline included presentations,
but the enrolment is too high for us to be able to do this.)

**Medical Accommodation:**
If you are unable to attend the final exam due to *illness* or other
serious circumstances, you must provide valid medical or other
supporting documentation to your Dean's office as soon as possible and
contact your instructor immediately.
It is the student's responsibility
to make alternative arrangements with their instructor.
For further information please see
this link
and the Student Services web site.

A student requiring academic accommodation due to illness should bring a Student Medical Certificate with them when visiting an off-campus medical facility and use a Record Release Form for visits to Student Health Services.

If **homework** is missed and sufficient documentation is provided, the
homework can be handed in later.
If an **exam** is missed and sufficient documentation is provided,
a *make-up exam* will be offered.

Failure to follow these rules may result in a grade of zero.

**Scholastic offences:** Scholastic offences are taken
seriously and students are directed to read the appropriate policy,
specifically, the definition of what constitutes a Scholastic Offence,
at the following Web sites:
http://www.uwo.ca/univsec/pdf/academic_policies/appeals/scholastic_discipline_grad.pdf
and
http://www.uwo.ca/univsec/pdf/academic_policies/appeals/scholastic_discipline_undergrad.pdf

**Accessibility:**
Please contact the course instructor if you require material in an
alternate format or if you require any other arrangements to make this course
more accessible to you. You may also wish to contact
Services for Students with Disabilities (SSD)
at 519-661-2111 x82147 for any specific question regarding an accommodation.

**Support Services:**
Learning-skills counsellors at the Student Development Centre
are ready to help you improve your learning skills.
Students who are in emotional/mental distress should refer to
Mental Health@Western
for a complete list of options about how to obtain help.
Additional student-run support services are offered by the
USC.
The website for Registrarial Services is
http://www.registrar.uwo.ca.

**Eligibility:**
You are responsible for ensuring that you have successfully completed
all course prerequisites and that you have not taken an antirequisite
course.
Unless you have either the requisites for this course or written special permission
from your Dean to enroll in it, you may be removed from this course and it will be
deleted from your record. This decision may not be appealed. You will receive
no adjustment to your fees in the event that you are dropped from a course for
failing to have the necessary prerequisites.