Studia Universitatis Babes-Bolyai: Series Informatica (Dec 2010)
Nonmonotonic Skeptical Consequence Relation in Constrained Default Logic
Abstract
This paper presents a study of the nonmonotonic consequence relation which models the skeptical reasoning formalised by constrained default logic. The nonmonotonic skeptical consequence relation is defined using the sequent calculus axiomatic system. We study the formal properties desirable for a good nonmonotonic relation: supraclassicality, cut, cautious monotony, cumulativity, absorption, distribution.