Logic, Form and Grammar by Peter Long - 9780415408080

Logic, Form and GrammarAuthor(s): Peter Long\nFormat: Paperback\nPublisher: Taylor & Francis Ltd, United Kingdom\nImprint: Routledge\nISBN-13: 9780415408080, 978-0415408080\nSynopsis\nThe notion of logical form and its applications are at the heart of some of the classical problems in philosophical logic and are the focus of Peter Longs investigations in the three essays that comprise this volume.\n\nIn the first, major, essay the concern is with the notion of logical form as it applies to arguments involving hypotethical statements, for example If today is Wednesday then tomorrow is Thursday; today is Wednesday: therefore tomorrow is Thursday. Whilst such an argument (an argument by modus ponens) is cited by logical textbooks as a paradigm of one that is formally valid, it is not hard to show that the conjunction forming a hypothetical statement is not a logical constant, in which case the argument form If p then q; p: therefore q is not a logical form. But, then, how can logic .