On the Logic of SQL Nulls

According to the point of view of the French mathematicians who participated to the conference, a number of topics on which Iraqi mathematicians are doing research is not connected

In order to show that <-inv FO collapses to FO over a class of structures of bounded treewidth, it is tempting to reduce the case of bounded treewidth to the case of trees,

We want to be able to express, for instance that action a occurs at moment t if conditions p 1 ,. all preceding t... Here we present an approach where it is possible to

On the one hand, one could exclude classes with public attributes from the property (i.e in all functions, any locally declared object whose class does not have public attributes and

Following a lengthy evaluation and selection process, BFO was adopted in the spring of 2019 to be the top-level ontology of the Industrial Ontologies Foundry (IOF), an ecosystem

We establish the upper bound by character- izing the satisfiability of a formula in GFU via mosaics, where a mosaic is a special (finite) collection of types that can be used to build

We present a simple prover for first-order logic with certified soundness and completeness in Isabelle/HOL, taking formalizations by Tom Ridge and others as the starting point, but