We propose a systematic investigation on how to modify a preference relation in a defeasible logic theory to change the conclusions of the theory itself. We argue that the approach...
Guido Governatori, Francesco Olivieri, Simone Scan...
Beluga is an environment for programming and reasoning about formal systems given by axioms and inference rules. It implements the logical framework LF for specifying and prototypi...
We introduce a logic designed to support reasoning about social choice functions. The logic includes operators to capture strategic ability, and operators to capture agent prefere...
Nicolas Troquard, Wiebe van der Hoek, Michael Wool...
Reasoning about permissions and obligations sometimes requires to distinguish more than one level of permission: certain actions are preferable to others, or one has more confiden...
Based on inductive definitions, we develop a tool that automates the definition of partial recursive functions in higher-order logic (HOL) and provides appropriate proof rules for ...