Trubetzkoy's chief contributions to linguistics lie in the domain of
phonology, particularly in the analyses of the phonological systems of individual languages and in the search for general and universal phonological laws. His magnum opus,
Grundzüge der Phonologie (
Principles of Phonology) was issued posthumously in which he defined the
phoneme as the smallest distinctive unit within the structure of a given language. It was crucial in establishing phonology as a discipline separate from
phonetics. Trubetzkoy also wrote as a
literary critic. In
Writings on Literature, a brief collection of translated articles, he analyzed
Russian literature beginning with the
Old Russian epic ''
The Tale of Igor's Campaign'' and proceeding to
19th-century Russian poetry and
Dostoevsky. It is sometimes hard to distinguish Trubetzkoy's views from those of his friend
Roman Jakobson, who should be credited with spreading the Prague School views on phonology after Trubetzkoy's death.
Structuralism In his biography of the mathematical collective
Nicolas Bourbaki,
Amir Aczel described Trubetzkoy as a pioneer in
structuralism, an interdisciplinary outgrowth of structural linguistics that would be applied in mathematics by the Bourbaki group, as in the notion of a
mathematical structure, and in anthropology by
Claude Lévi-Strauss, who sought to describe rules governing human behavior. According to Aczel, Trubetzkoy's focus in
Principles of Phonology was the study of
phonemes and their opposing aspects to describe rules of language, the goal of describing general underlying rules being the common goal of structuralism. ==See also==