From December 14th to 18th, the international conference "Workshop OTHA Fall 2025" was held in Sochi (Sirius). The event is part of a series of international scientific conferences entitled "Modern Methods and Problems of Operator Theory and Harmonic Analysis and Their Applications" (OTHA). See the webpage: https://otha.sfedu.ru/workshop-otha-fall-2025/ .
This event was followed by a satellite session in Rostov-on-Don, which featured the following speakers: M.I. Karyakin, V.D. Kryakvin, O.G. Avsyankin, A.V. Abanin, Ya.M. Erusalimsky, B.G. Vakulov, A.O. Vatulyan, R.D. Nedin, A.V. Nasedkin.