A teacher who is always near

To the 80th anniversary of Corresponding Member of the NAS of Ukraine M.I. Portenko

Abstract

February 23, 2022 marks the 80^th anniversary of the outstanding Ukrainian mathematician in the field of theory of random processes and its applications, winner of the State Prize of Ukraine in the Field of Science and Technology (2003), winner of the M.V. Ostrogradsky Prize of the NAS of Ukraine (2002), Leading Researcher of the Department of Random Processes Theory of the Institute of Mathematics of the NAS of Ukraine, Doctor of Physical and Mathematical Sciences (1978), Professor (1991), Corresponding Member of the NAS of Ukraine (1995) Mykola I. Portenko.