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• 21:17, 29 August 2024 Verbovet talk contribs created page Seminar talk, 11 September 2024 (Created page with "{{Talk | speaker = Valentin Lychagin | title = On a structure of the first order differential operators | abstract = The various geometrical structures associated with differential operators of the first order shall be discussed as well as notions of singular and regular points. At the end normal forms of operators at regular points will be presented. | video = | slides = | references = | 79YY-MM-DD = 7975-90-88 }}")