Author Biography 1.    Authors’ full names followed by current positions: Alexander Ivanovich Zhdanok, Leading Researcher, Institute for Information Transmission Problems RAS (IITP RAS), Moscow; 2.    Education background: Sobolev Institute of Mathematics of the Siberian Branch RAS, Novosibirsk Akademgorodok, RU, 2007 (Doctor of Physical and Mathematical Sciences); Institute of Mathematics of National Academy of Sciences of Ukraine, Kiev, 1992 (Doctorate); University of Latvia, Faculty of Physics and Mathematics, Riga, 1980, (PhD Phys.-Math.); 3.    Work experience: Riga Technical Univ., Riga, Latvia, Ass. Prof. (1980-1992); Tuvan St. Univ.: Kyzyl, RU, Ass. Prof., Prof., Head of Dep. of Mathem. Analysis (1992-2018); IITP RAS, Moscow, RU (from 2018 to present); 4.    Research interests: general Markov chains, Markov operators, ergodic theorems, invariant purely finitely additive measures, compactness; mathematical modeling.