The topology of syntax relations of a formal language

Details The topology of syntax relations of a formal language The topology of syntax relations of a formal language

2008-02-28

arxiv.org/abs/0802.4181v1

Mathematics

Category Theory

11 pages

Scientific paper

The method of constructing of Grothendieck's topology basing on a neighbourhood grammar, defined on the category of syntax diagrams is described in the article. Syntax diagrams of a formal language are the multigraphs with nodes, signed by symbols of the language's alphabet. The neighbourhood grammar allows to select correct syntax diagrams from the set of all syntax diagrams on the given alphabet by mapping an each correct diagram to the cover consisted of the grammar's neighbourhoods. Such the cover gives rise to Grothendieck's topology on category of correct syntax diagrams extended by neighbourhoods' diagrams. An each object of the category may be mapped to the set of meanings (abstract senses) of this syntax construction. So, the contrvariant functor from category of correct syntax diagrams to category of sets is defined. The given category of contravariant functors likes to be seen as the convenient means to think about relations between syntax and semantic of a formal language. The sheaves of set defined on category of contravariant functors are the objects that satisfy of compositionality principle defined in the semantic analysis.

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