6.03 Wirtinger presentation
Channel: Jonathan Evans
Date: 2017-12-12

We combine the Artin action and Van Kampen's theorem to find a presentation (the Wirtinger presentation) for the fundamental group of the complement of a knot. For notes, see here:

http://www.homepages.ucl.ac.uk/~ucahjde/tg/html/braids03.html