OP-00960 Open Indices of irreducible subfactors of the hyperfinite II₁ factor OA · hyperfinite II₁ factor · Jones index · Peterson's operator algebra problems · subfactors
OP-00971 Open Popa's factorial commutant embedding problem OA · hyperfinite II₁ factor · Peterson's operator algebra problems · relative commutants · ultrapowers
OP-00975 Open A discrete copy of the free group in the unitary group of the hyperfinite II₁ factor OA · discrete subgroups · free groups · hyperfinite II₁ factor · Peterson's operator algebra problems · unitary groups
OP-00976 Open Unitary representations of higher-rank lattices in the hyperfinite II₁ factor OA · hyperfinite II₁ factor · lattices in Lie groups · Peterson's operator algebra problems · rigidity · unitary representations