Abstract

LF has been designed as a meta-logical framework to represent logics, and has become a standard tool for studying properties of logics. Building on the newly introduced module system for LF, we present the nucleus of an integrated and structured development of the syntax, semantics, and proof theory of logics, and of the relations between those logics. The methodology is chosen so that it will scale to an atlas for the zoo of logics currently used in reasoning systems, and the modular nature of this development aids the practical integration of systems because shared features of the logics are reused directly. Finally we show how these encodings in LF are imported into the Hets system, which provides automated proof support on the modular level and integrates various automated theorem provers for the represented object logics