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We provide a new presentation for the annular braid group. The annular braid group is known to be isomorphic to the finite type Artin group with Coxeter graph B n. Using our presentation, we show that the annular braid group is a semidi-rect product of an infinite cyclic group and the affine Artin group with Coxeter graph˜A n−1. This provides a new example(More)
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