Undisputed Sets
A set is undisputed iff is conflict-free and the reduct has no non-empty admissible set.
Remarks
That is, , a vacuous reduct semantics.
Reference
Thimm, M. (2023). On Undisputed Sets in Abstract Argumentation. In: Proceedings of the 37th AAAI Conference on Artificial Intelligence (AAAI 2023), pp. 6550–6557. AAAI Press.