User Tools

Site Tools


category_of_two-colored_pair_partitions

Category of two-colored pair partitions

The category of two-colored pair partitions is a category of two-colored partitions inducing the co-representation categories of the orthogonal groups.

Definition

By the category of two-colored pair partitions one denotes the subcategory of the category of all two-colored partitions $\Pscr^{\circ\bullet}$ whose morphism class is the set of all pair partitions. It was introduced by Tarrago and Weber in [TaWe18], Theorem 8.3 under the name $\mathcal{O}_{\mathrm{grp},\mathrm{glob}}(2)$.

  • A two-colored partition $p\in\Pscr^{\circ\bullet}$ is called a pair partition (see category of all pair partitions in the uncolored case), if every block $B$ of $p$ satisfies $|B|=2$.
  • The name set of all pair partitions partitions with neutral blocks is to be taken literally.

The set of two-colored pair partitions is the morphism set of the subcategory of $\Pscr^{\circ\bullet}$ generated by the set $\{\Partition{\Pline (1,0) (2,1) \Pline (2,0) (1,1) \Ppoint 0 \Pw:1,2 \Ppoint 1 \Pw:1,2},\raisebox{0.125em}{\LPartition{\Pw:1;\Pw:2}{0.6:1,2}}\}$.

Associated unitary easy quantum groups

The category of two-colored pair partitions induces the co-representation categories of the orthogonal groups $(O_N)_{N\in \N}$.

References


[TaWe18] Tarrago, Pierre and Weber, Moritz, February 2018. The classification of tensor categories of two-colored non-crossing partitions. Journal of Combinatorial Theory, Series A, 154, pp.464–506.
category_of_two-colored_pair_partitions.txt · Last modified: 2021/11/23 11:56 (external edit)