nLab
Whitehead link

The Whitehead link is a famous link which shows the difference between the notion of equivalence. If links are only allowed to move by isotopies, then the two components are linked. However, if a link is allowed to pass through itself, then they can be unlinked.

Note

To include this picture in a page, write [[!include Whitehead link - SVG]].

Last revised on October 21, 2010 at 00:47:19. See the history of this page for a list of all contributions to it.