A type of formal language set up by the logician Richard Montague in his seminal ‘The Proper Treatment of Quantification in English’ (1974). A Montague grammar is based on a first-order language to which are added powerful logical tools for the construction and evaluation of sentences. The formal language includes: (i) first-order predicate logic, (ii) modal operators, (iii) tense operators, (iv) lambda abstraction, (v) operators forming the intensions and extensions of predicates. Montague provides a type-theoretic structure, but permits quantification over every type of expression. This language is called IL (intensional language). He gives IL a model theory, in terms of individuals, truth-values, coordinates of possible worlds and times (indexes), and functions of all these. IL enables us to give an indirect interpretation of any sentence of a natural language: first the sentence is mapped onto a translation in IL, and then the interpretation of this sentence is given. Montague's ideal was a full translation of natural language into the interpreted formal language thus generated.
Montague grammar is an approach to natural language semantics, named after American logician Richard Montague. The Montague grammar is based on formal logic, especially higher order predicate logic and lambda calculus, and makes use of the notions of intensional logic, via Kripke models. Montague pioneered this approach in the 1960s and early 1970s.
Montague's thesis was that natural languages (like English) and formal languages (like programming languages) can be treated in the same way:
There is in my opinion no important theoretical difference between natural languages and the artificial languages of logicians; indeed, I consider it possible to comprehend the syntax and semantics of both kinds of language within a single natural and mathematically precise theory. On this point I differ from a number of philosophers, but agree, I believe, with Chomsky and his associates. (Universal Grammar 1970)
Montague published what soon became known as Montague grammar[1] in three seminal papers:
Montague's treatment of quantification has been linked to the notion of continuation in programming language semantics.[5]
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