On September 28, 2026, a scientific session of the General Meeting of the Department
of Mathematics of the National Academy of Sciences of Ukraine was held, dedicated to the 225th anniversary of the birth of the outstanding
Ukrainian mathematician, academician M. V. Ostrohradskyi and the 75th anniversary of the birth of
Professor of V. N. Karazin Kharkiv National University,.
Corresponding Member of the National Academy of Sciences of Ukraine I. D. Chuyeshov.
The following reports were made

1. «Mykhailo Vasyliovych Ostrohradskyi: mathematician, mechanic, academician of
   Petersburg, American, Turin, Roman, and Parisian
   academies»
   Speaker: Oleksandr Mykolaiovych Tymokha — academician of the National Academy of Sciences of Ukraine, director
   of the Institute of Mathematics of the National Academy of Sciences of Ukraine
2.  «Scholar and Personality: In Mathematics and Life» — dedicated to the 75th anniversary of the birth of
   Ihor Dmytrovych Chuyeshov
   Speaker: Oleksandr Viacheslavovych Rezunenko — Doctor of Physical and Mathematical
   Sciences, associate professor, professor of the Department of Fundamental Mathematics of the Faculty
   of Mathematics and Informatics of V. N. Karazin Kharkiv National University.
   Karazin