Module-theoretic properties of reachability modules for SRIQ

Abstract. In this paper we investigate the module-theoretic properties of ⊥ − and ⊤-reachability modules in terms of inseparability relations for the DL SRIQ. We show that, although these modules are not depleting or self-contained, they share the robustness properties of syntactic locality modules and preserve all justifications for an entailment.