Mémoire sur le système primitif des voyelles dans les langues indo-européennes
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Ferdinand de Saussure's M\u00e9moire sur le syst\u00e8me primitif des voyelles dans les langues indo-europ\u00e9ennes (1878) addressed vowel alternations in Proto-Indo-European languages. This work was a significant contribution to comparative linguistics, building on earlier observations of similarities between Sanskrit, Greek, and Latin.12
Saussure hypothesized that verbs in the ancestral language had a single core vowel, and vowel alternations occurred as languages evolved. The decipherment of the Hittite language later validated his theories, solidifying the reconstructed structure of Proto-Indo-European. This foundational work in linguistics laid the groundwork for 20th-century structural linguistics.12
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