{"product_id":"proof-in-vdm-a-practitioners-guide-book-juan-c-bicarregui-9783540198130","title":"Proof in VDM: A Practitioner’s Guide","description":"Formal specifications were first used in the description of program- ming languages because of the central role that languages and their compilers play in causing a machine to perform the computations required by a programmer. In a relatively short time, specification notations have found their place in industry and are used for the description of a wide variety of software and hardware systems. A formal method - like VDM - must offer a mathematically-based specification language. On this language rests the other key element of the formal method: the ability to reason about a specification. Proofs can be empioyed in reasoning about the potential behaviour of a system and in the process of showing that the design satisfies the specification. The existence of a formal specification is a prerequisite for the use of proofs; but this prerequisite is not in itself sufficient. Both proofs and programs are large formal texts. Would-be proofs may therefore contain errors in the same way as code. During the difficult but inevitable process of revising specifications and devel- opments, ensuring consistency is a major challenge. It is therefore evident that another requirement - for the successful use of proof techniques in the development of systems from formal descriptions - is the availability of software tools which support the manipu- lation of large bodies of formulae and help the user in the design of the proofs themselves.","brand":"WoB","offers":[{"title":"GB \/ NEW \/ INGRAM","offer_id":52141839810833,"sku":"NLS9783540198130","price":125.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9783540198130.jpg?v=1757578348","url":"https:\/\/www.worldofbooks.com\/en-au\/products\/proof-in-vdm-a-practitioners-guide-book-juan-c-bicarregui-9783540198130","provider":"World of Books ","version":"1.0","type":"link"}