The defense of the PhD dissertation by Khasanov Temur Gafurjonovich on the topic “Integration of the Korteweg–de Vries equation with nonstationary coefficients and sources in the classes of rapidly decreasing and periodic functions”, specialty 01.01.02 – Differential Equations and Mathematical Physics, for the degree of Doctor of Philosophy (PhD) in Physical and Mathematical Sciences, was held on May 24, 2025, at 10:00, at the meeting of the Scientific Council No. DSc.30/30.12.2019.FM.02.01 under Samarkand State University.