- Thread starter
- Moderator
- #1

- Jun 20, 2014

- 1,892

-----

Prove that a homeomorphism of the closed unit disk onto itself must map $S^1$ onto $S^1$.

-----

Remember to read the POTW submission guidelines to find out how to submit your answers!

- Thread starter Euge
- Start date

- Status
- Not open for further replies.

- Thread starter
- Moderator
- #1

- Jun 20, 2014

- 1,892

-----

Prove that a homeomorphism of the closed unit disk onto itself must map $S^1$ onto $S^1$.

-----

Remember to read the POTW submission guidelines to find out how to submit your answers!

- Thread starter
- Moderator
- #2

- Jun 20, 2014

- 1,892

- Status
- Not open for further replies.