Hybrid Tableaux for the Difference Modality
Mark Stefan Kaminski, Gert Smolka · Electronic Notes in Theoretical Computer Science · 2009
We present the first tableau-based decision procedure for basic hybrid logic with the difference modality. The decision procedure is gracefully degrading in that the less expressive constructs don't pay for the computationally expensive difference modality. The procedure can be specialized to reflexive and transitive frames. Key features of our approach are nominal elimination, pattern-based blocking, and expansion control.