Unique-Status

A semantics σ\sigma satisfies Unique-Status iff ∣σ(F)∣=1|\sigma(F)| = 1 for every framework FF.

Reference

Baroni, P. & Giacomin, M. (2007). On Principle-Based Evaluation of Extension-Based Argumentation Semantics. Artificial Intelligence, 171(10–15), pp. 675–700.