Implementing a Modal Logic over Data and Processes using XTL

Suhrawardi's Modal Syllogisms

Suhrawardi’s logic of the Hikmat al-Ishraq is basically modal. So to understand his modal logic one first has to know the non-modal part upon which his modal logic is built. In my previous paper ‘Suhrawardi on Syllogisms’(3) I discussed the former in detail. The present paper is an exposition of his treatment of modal syllogisms. On the basis of some reasonable existential presuppositi...

XTL: An XML Transformation Language and XSLT generator for XTL

This paper describes a new query and transformation language XTL (An XML transformation language). XTL is based on both output driven and schema driven approach: 1) To specify an output structure of transformation using XML schema language (so far we choose DTD), 2) To map from well-formed input XML documents to an output structure using XPath that is embedded in DTD. XTL has a simple syntax, a...

Advanced Modelling and Verification Techniques Applied to a Cluster File System

This paper describes the application of advanced formal modelling techniques and tools from the CADP toolset to the verification of CFS, a distributed file system kernel. After a short overview of the specification of CFS, we describe the techniques used for model generation and verification, and their application to CFS. Two original aspects are put forth: firstly, the model is generated in a ...

Implementing the Modal Logic Full Using Ergo Extended Abstract]

Model Checking FO(R) over One-Counter Processes and beyond

One-counter processes are pushdown processes over a singleton stack alphabet (plus a stack-bottom symbol). We study the problems of model checking asynchronous products of one-counter processes against 1) first-order logic FO(R) with reachability predicate, 2) the finite variable fragments FO(R) (k ≥ 2) of FO(R), 3) EF-logic which is a fragment of FO(R), and 4) all these logics extended with si...