BCDL: Basic Constructive Description Logic

In this paper we present BCDL, a description logic based on information terms semantics, which allows a constructive interpretation of ALC formulas. In the paper we describe the information terms semantics, we define a natural deduction calculus for BCDL and we show it is sound and complete. As a first application of proof-theoretical properties of the calculus, we show how it fulfils the proofs-as-programs paradigm. Finally, we discuss the role of generators, the main element distinguishing our formalisation from the usual ones