Simulating without negation
UNSPECIFIED. (1997) Simulating without negation. JOURNAL OF LOGIC AND COMPUTATION, 7 (4). pp. 501-522. ISSN 0955-792XFull text not available from this repository.
Although negation-free languages are widely used in logic and computer science, relatively little is known about their expressive power. To address this issue we consider kinds of non-symmetric bisimulations called directed simulations, and use these to analyse the expressive power and model theory of negation-free modal and temporal languages. We first use them to obtain preservation, safety and definability results for a simple negation-free modal language. We then obtain analogous results for stronger negation-free languages. Finally, we extend our methods to deal with languages with non-Boolean negation.
|Item Type:||Journal Article|
|Subjects:||Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software|
|Journal or Publication Title:||JOURNAL OF LOGIC AND COMPUTATION|
|Publisher:||OXFORD UNIV PRESS|
|Official Date:||August 1997|
|Number of Pages:||22|
|Page Range:||pp. 501-522|
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