Isla: Integrating Full-Scale ISA Semantics and Axiomatic Concurrency Models

Structured Axiomatic Semantics for UML Models

In this paper we provide a systematic formal interpretation for most elements of the UML notation. This interpretation, in a structured temporal logic, enables precise analysis of the properties of these models, and the verification of one model against another. We extend previous work by providing a structured logical interpretation for sequence diagrams, in which object communication is repre...

Full abstraction of a denotational semantics for real - time concurrency

We present a fully abstract semantics for real-time distributed computing of the Ada and OCCAM kind in a denotational style. This semantics tums tennination, communication along channels, and the time communication takes place, into observabIes. Yet it is the coarsest semantics to do so which is syntax-directed (this is known as full abstraction). It extends the linear history semantics for CSP...

Hoare’s Axiomatic Semantics

On the Axiomatic Treatment of Concurrency

T h i s p a p e r descr ibes a s e m a n t i c a l l y b a s e d ax iomat i c t r e a t m e n t of a s imple para l le l p r o g r a m m i n g l anguage . We consider an impera t ive l anguage w i t h sha red var iab le concurrency a n d a cr i t ical region cons t ruc t . After giving a s t r u c t u r a l ope ra t iona l semant ics for t h e l anguage we use t h e s eman t i c s t r u c t u r...

In Defence of Axiomatic Semantics

Many semantic theories implicitly attribute a foundational status to set theory, and set-theoretic characterisations of possible worlds in particular. The goal of a semantic theory is then to find a translation of the phenomena of interest into a settheoretic model. This can be contrasted with an axiomatic approach in which we can formulate “new” primitives and ontological categories, and devis...