Braids. Chapter 2 - The word problem
Channel: Ester Dalvit
Date: 2013-04-12

Chapter 2 of my movie about braids.
Chapter 3: http://www.youtube.com/watch?v=sitZ0kO3uvg
Chapter 1: http://www.youtube.com/watch?v=u3Gt578803I
Music by Raul Masu.
Homepage: http://matematita.science.unitn.it/braids/