Formal grammar of Russian language in examples

The possibility of a constructive theory creation for a natural language and of its morphology and syntax implementation on a computer by formalizing the appropriate rules is shown in the article. There are a few words in the lexicon of the example under consideration. The grammar of the Russian language is simplified. The morphology model is determined by the vocabulary and the rules of morphology which are stored in the word-morphological (morphological) dictionary. In the computer model of morphology, two algorithms are implemented: synthesis and analysis of word forms. The syntax model is defined by the morphology and syntax rules. Syntax rules generate word combinations used in the language. The rules of syntax are presented in the form of pairs (direct products) of lexical groups. A lexical group is a set of word forms that have the same morphological parameters. Phrases are defined in the lexicon of some graph which is a syntax. The concepts of syntax are defined in terms of graph theory. In particular, the concept of the sentence in a syntax is defined. Then, two problems are formulated: synthesis and analysis of the sentence. Algorithms for solution of them are described and implemented in the Delphi 7.0 programming environment.