Open questions

Open questions

  • Liftings over non-cyclic groups, and uq(sl2)u_{q}(\mathfrak{sl}_{2}) at a seventh root of unity (dimension 343).
  • Abelian extensions of order 32, and twists by larger abelian subgroups (the isocategorical pairs start at order 64).
  • Merges by invariants that the isomorphism search leaves undecided.
  • An exact backend for Rep(H), which is numeric today.
  • Non-split commutative algebras (Galois descent), and mixed profiles such as Mat2⊕K\mathrm{Mat}_{2} \oplus K in the search.
  • The weak Hopf structures on Matn\mathrm{Mat}_{n} with a given noncommutative counital subalgebra, and the weak bialgebra structures on Mat3\mathrm{Mat}_{3}.