Three-component complex sentences with heterogeneous subordination in the scientific style of the Russian language (based on texts of mathematical works)

The article considers not the most productive type of multicomponent complex sentences – constructions with heterogeneous subordination. Nevertheless, this are important in style exact sciences, especially texts mathematical works, where main task author is to show course logical reasoning, and reader follow movement author's thought. In order correctly understand idea, it necessary imagine described object or phenomenon from different angles. This largely facilitated by structures under study. On basis three-component various combinations components an indivisible analysed, syntactic relations these considered. So, for example, was revealed that substantive-attributive clause, explaining a certain term concept, closely merges previous clause. clearly manifested when formula, clause turns into semi-phraseological construction, relative pronoun almost completely loses its spatial semantics. semantic core sentence, as rule, concentrated subordinate acquires service, introductory character. means connection study standard, often repeated, devoid colouring. Pronominal-correlative pronominally-conjunction correlative clauses used tandem either Pronominal bring semantics sentence bright colouring consequence, comparison, quantity, mode action, etc. study, so connected organising part one can speak their dependence predicative units likening role semi-predicative participial adverbial phrases.