SUMMARY
May 24, 2021 turned 75 years since the birth of the famous mathematician, academician of the National Academy of Sciences of Ukraine Oleksandr Andriyovych Borisenko. The editorial board welcomes. According to the interviews of O.A. Borisenko: ''Half a century in geometry. To the 75th anniversary of corresponding member of NAS of Ukraine O.A. Borisenko. (2021). Bulletin of the National Academy of Sciences of Ukraine, (5), 95–102.''