Equivalence of the semisimplification with the Verlinde quotient

Let HVH_V be the reductive algebraic group and let CVψ\overline{\mathcal{C}}_{\overline{V_\psi}} be the semisimplification of the tensor category generated by the corresponding object Vψ\overline{V_\psi}. For sufficiently large primes pp, there is a surjective tensor functor

F:Verp(HV)CVψ.F:{\rm Ver}_p(H_V)\to \overline{\mathcal{C}}_{\overline{V_\psi}}.

Equivalence conjecture. For sufficiently large pp, the functor FF is an equivalence.

The preceding theorem establishes that the target is a quotient of Verp(HV){\rm Ver}_p(H_V) and, in particular, a fusion category; the conjecture asserts that this quotient has no further nontrivial kernel.

Sources & referencesView supporting material

Primary source

Pavel Etingof and Victor Ostrik, “On semisimplification of tensor categories”, arXiv:1801.04409 (2019).

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