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Results tagged with braid-groups
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user 4304
5
votes
Is the pure braid group on three strands generated as a normal subgroup of the braid group b...
Let $\epsilon: F(2)\rightarrow \mathbb{Z}$ be the map that sends a word to its total exponential sum.
It is a homomorphism.
Notice that $lrlr^{-1}l^{-1}r^{-1}$ is sent to zero, as is any conjugate of …
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