Abstract
Let Cn denote the representation category of finite supergroup ∧kn⋊Z/2Z. We compute the Brauer–Picard group BrPic(Cn) of Cn. This is done by identifying BrPic(Cn) with the group of braided tensor autoequivalences of the Drinfeld center of Cn and studying the action of the latter group on the categorical Lagrangian Grassmannian of Cn. We show that this action corresponds to the action of a projective symplectic group on a classical Lagrangian Grassmannian.
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