Stable Semantics
A set is a stable extension iff is conflict-free and .
Signature
A set of sets of arguments is in iff is incomparable and tight (Dunne et al., 2015).
Reference
Dung, P.M. (1995). On the Acceptability of Arguments and its Fundamental Role in Nonmonotonic Reasoning, Logic Programming and n-Person Games. Artificial Intelligence, 77(2), pp. 321–357.