We introduce a family of 3d N=4 superconformal field theories that have zero-dimensional Coulomb and Higgs branches and propose that the rational vertex operator algebras Wk−21min(sp2N)
Nearby in the stack
and
Lk(osp1∣2N)
model the modular tensor categories of line operators in their topological
A
and
B
twists, respectively. Our analysis indicates that the action of 3d mirror symmetry on this family of theories is related to a novel level-rank duality and leads to several conjectural