### Announcements

- Class is cancelled on Friday, 3/2 ... we will make this up through presentations at the end of the semester.
- These office hours are cancelled: W., 2/29, 3:30-4; Th., 3/1, 2-4
- More extra-credit talks have been listed below.
- All lecture notes through M., 2/20 are now posted under Course Documents, as well as one homework solution (1.6.4).

### Course information

Meeting times: MWF 11am, room 125.

My office hours (330 Manchester):

- MW 10-11am
- W, 3:30-4pm (this will occasionally be moved)
- Th 2-4pm
- by appointment

### Website Info

We'll post most everything for the course on this site, including assignments, projects, pictures, and various other stuff.

### Course description

Topology is the study of the shape of objects in one, two, three, ... dimensions, where we are not concerned with their precise geometry. Rather, a topologist considers two objects the same if one can be `nicely' deformed to another. The word `nicely' can assume different meanings depending on the context. We will cover the first four chapters of Messer and Straffin's book and possibly some of chapter 6, including these topics.

- Deformations [2-3 weeks]
- Knot Theory [3-5 weeks]
- Classification of Surfaces [3 weeks]
- Three-dimensional manifolds [2-3 weeks]
- The fundamental group [2+ weeks]

### Extra-credit talks

If you go to any of the following talks, you will earn gold stars (extra-credit). Each talk is typically worth 1 star. Unless noted, talks are in 016 Manchester and at 4pm.

- W., 1/18: Math Dept. Opening Colloquium
- Statistics professor hiring talks [these are likely to be aimed above an undergrad level]
- M., 1/30: Dr. Rebecca Alexander (WFU Chemistry), on the history of women in science [DeTamble Auditorium, Tribble, 4:30pm]
- M., 2/13: Undergraduate Research Opportunities -- aimed at sophomores & juniors -- you can get paid good money to do mathematical research this summer [math lounge (Manchester 336), 6pm]
- M., 2/20: Student Research Presentations (by math grad/undergrad students)
- W., 2/22:
**Math Club Talk:**Dr. John Webb - Tu., 2/28:
**Math Club Event: Origami**[7-9pm] - W., 4/4: Math Colloquium, Dr. Jonah Swann (Bryn Mawr College), on topology
- W., 4/18:
**Math Club Talk:**Dr. Frank Moore