Spiridon Alekseevich Ivanov – 90 years old
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The article presents the research of the outstanding philologist of the Yakut linguistics Spiridon Alekseevich Ivanov, who celebrated his 90th birthday. Scientists recorded dialectal features of the Yakut language in the atlas and studied their origin at the level of phonetics, morphology and vocabulary. The linguist proved the existence of the Yakut language type on the basis of dialectal data in the Middle Ages to south of the present-day borders of Yakutia. Issues of the nature of the Altaic language community and the early differentiation of the various Turkic language types, including Yakut, are considered.
Key words: Linguist, Yakut, linguistics, dialectology, atlas, phonetics, morphology, vocabulary, Middle Ages, Altaistics, Proto Turkic, types.