All Questions
1 question
8
votes
1
answer
561
views
Identifying the little disk operad with parenthesized braids
Let $D_2$ be the topological operad of little disks. This operad can be modelled "combinatorially" in terms of an operad of groupoids called $\newcommand{\PaB}{\mathbf{PaB}}\PaB$, the operad of ...
- 40.2k