Precedent units in scientific texts

The article is devoted to the investigation of the peculiarities of precedent texts functioning in the scientific discourse (for example Pythagorean theorem, Mendeleev's table, Saussure's 'la langue' and others). These texts are quanta of the previous knowledge (laws, theories, hypotheses, theorems, principals, methods and others), and are included into the scientific fund under their authors' names as terms. Precedent texts provide systematization and accumulation of scientific knowledge as well as the scientific tradition evolution. Being the components of concept text structure they activate the basic knowledge of the reader and help the addressee's better comprehension.