Subqueries are a poweful feature which allows to enforce reuse, composition, rewriting and optimization in a query language. In this paper we perform a comprehensive study of the i...
We present a new, streamlined language of global types equipped with a trace-based semantics and whose features and restrictions are semantically justified. The multi-party sessio...
Giuseppe Castagna, Mariangiola Dezani-Ciancaglini,...
Circumscription and logic programs under the stable model semantics are two wellknown nonmonotonic formalisms. The former has served as a basis of classical logic based action for...
In this paper, we will study semantics that have been used for conditionals in the area of knowledge representation and reasoning: A purely qualitative semantics based on the popu...
Given a program S and a precondition Q, the strongest postcondition, denoted sp(S Q), is defined as the strongest condition that holds after the execution of S, given that S term...