The article analyzes the genesis of the principle of the triad and its originality, social, moral, as well as philosophical and artistic functions using the example of folklore of the nations of the world, works of hagiographic, classical and modern literature. The purpose of the study is to reveal the role of the triad in fiction, its artistic and aesthetic function, its participation as a poetic image, digital representations in the composition of literary works, in particular, the significance of the concept based on the triad, its genesis, problems with the character of heroes in modern literature. The following tasks were set: to describe the scientific and theoretical aspects of terms associated with digital representations, to study the problem of digital representations the universal nature, functional aspects of works based on the triad, issues of using such works in connection with life phenomena; the interaction of the image of the triad with social realities, the application and functional features of the triad in ancient literature, the study of the relationship of number with various concepts; the use of a triad in the composition of a work, determining the place of such works in the structural and compositional system; justifying the expression of national identity, realities and national color in such works , the universal nature of motives, reality and artistic fiction.