International Conference on Differential Equations and their Applications. Topics: Theory and applications of differential equations in the broad sense (ordinary differential equations, partial differential equations, numerical methods and applications). The conference organized by rotation in Praha (1962, 1977, 1989, 2001, 2013), Bratislava (1966, 1981, 1993, 2005, 2017) and Brno (1972, 1985, 1997, 2009, 2022) became the worlds oldest series of comprehensive conferences on differential equations.