The common metric temporal logics for continuous time were shown to be insufficient, when it was proved in [7, 12] that they cannot express a modality suggested by Pnueli. Moreover...
This paper presents a completeness result for a first-order interval temporal logic, called Neighbourhood Logic (NL) which has two neighbourhood modalities. NL can support the spe...
By terms-allowed-in-types capacity, the Logic of Proofs LP includes formulas of the form t : ϕ(t), which have self-referential meanings. In this paper, “prehistoric phenomena...
Unions of conjunctive queries, also known as select-project-join-union queries, are the most frequently asked queries in relational database systems. These queries are definable b...