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Lookup NU author(s): Emeritus Professor Cliff JonesORCiD, Matthew Lovert, Dr Jason Steggles
Specifications of programs frequently involve operators and functions that are not defined over all of their (syntactic) domains. Proofs about specifications -and those to discharge proof obligations that arise in justifying steps of design- must be based on formal rules. Since classical logic deals only with defined values, some extra thought is required. There are several ways of handling terms that can fail to denote a value – this paper provides a semantically based comparison of three of the best known approaches. In addition, some pointers are given to further alternatives.
Author(s): Jones CB, Lovert MJ, Steggles LJ
Publication type: Report
Publication status: Published
Series Title: School of Computing Science Technical Report Series
Year: 2012
Pages: 17
Print publication date: 01/01/2012
Source Publication Date: January 2012
Report Number: 1310
Institution: School of Computing Science, University of Newcastle upon Tyne
Place Published: Newcastle upon Tyne
URL: http://www.cs.ncl.ac.uk/publications/trs/papers/1310.pdf
