TY - JOUR AU - Gheorghiu, Alexander V. AU - Pym, David J. TI - Definite Formulae, Negation-as-Failure, and the Base-Extension Semantics of Intuitionistic Propositional Logic JO - Bulletin of the Section of Logic PY - 2023 SP - 239 EP - 266 VL - 52 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/BSL_2023_52_2_a3/ LA - en ID - BSL_2023_52_2_a3 ER -