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Results tagged with braid-groups
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user 9417
2
votes
Accepted
Where can one find reference proving that Braid group induces isomorphism between punctured ...
The isomorphism of fundamental groups comes from a diffeomorphism of spaces: $D\times[0,1]\setminus B$ is diffeomorphic to the product of an n-punctured disk with $[0,1]$. To see this, note that you c …
- 4,898
14
votes
Accepted
Borromean braids
Certain elements in the $n-1$st term of the lower central series of the pure braid group should work.
The pure braid group is generated by generators $\beta_{i,j}$ where the $i$th strand pushes a fin …
- 4,898