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Paper detail

The column group and its link invariants

The column group is a subgroup of the symmetric group on the elements of a finite blackboard birack generated by the column permutations in the birack matrix. We use subgroups of the column group associated to birack homomorphisms to define an enhancement of the integral birack counting invariant and give examples which show that the enhanced invariant is stronger than the unenhanced invariant.

preprint2010arXivOpen access
Johanna HennigSam Nelson
math.QAmath.GT
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Johanna HennigSam Nelson

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