NOTES ON THE FUNCTION OF THE CONSTRUCTION "DATIVUS ABSOLUTUS" IN THE ELECTRONIC CORPUS OF 11<sup>TH</sup> CENTURY SLAVONIC-RUSSIAN MANUSCRIPTS
Based on the Electronic Corpus of Old Russian texts of the 11th century this article deals with semantical-syntactic peculiarities of variational East Slavic forms of the dative autonomous. The purpose of the similar historical and linguistic studies is to satisfy the needs of fundamental linguistics, and of a new trend of historical linguistics, for an extensive and reliable material for further research. For the first time, the article presents an exhaustive list of contexts with dativus singularis, compiled with the help of the diachronic, comparative-historical and quantitative methods of investigation and the elements of structural analysis. It also provides a complete quantitative summary of distribution of these variational forms. Computer technologies were used in realization of the statistical method, which was made possible due to the collaboration of Kazan Federal University with Sofia University named after St. Kliment Ohridski (Bulgaria). A continuous sample of forms and a quantitative analysis enabled us to put forward new concepts of the linguistic structure of the 11th century Old Russian language. Particularly relevant, from this point of view, is the study of the Corpus of Slavic-Book Texts as they bring us closer to the Old Slavic language reality and allow us to identify both normative and innovative phenomena in the original Old Russian language system of the 11th century. This study focuses on the original function of the Old Russian dative autonomous (dativus absolutus), which became a sign of semantically marked sacral texts. These features became a striking characteristic of the Old Russian bookish-literary language, which indicates the interdependence of traditional written norms and living language processes.