Mathematicians from HSE University–Nizhny Novgorod Solve 57-Year-Old Problem
In 1968, American mathematician Paul Chernoff proposed a theorem that allows for the approximate calculation of operator semigroups, complex but useful mathematical constructions that describe how the states of multiparticle systems change over time. The method is based on a sequence of approximations—steps which make the result increasingly accurate. But until now it was unclear how quickly these steps lead to the result and what exactly influences this speed. This problem has been fully solved for the first time by mathematicians Oleg Galkin and Ivan Remizov from the Nizhny Novgorod campus of HSE University. Their work paves the way for more reliable calculations in various fields of science. The results were published in the Israel Journal of Mathematics (Q1).
‘It’s Thrilling to Have an Opportunity to Discuss Your Scientific Ideas with Interested People’
The International Laboratory of Dynamical Systems and Applications at HSE University–Nizhny Novgorod conducts in-depth theoretical and applied research, including the study of ocean waves, solar corona reconnections, volcanic phenomena, and ship stability. The lab’s researchers, who have received more than 20 significant research grants over the past five years, actively cooperate with Russian and international colleagues from China, Spain, the USA, the UK, Brazil, and other countries. Prof. Olga Pochinka spoke to the HSE News Service about the laboratory’s work.