International scientific workshop OTHA Fall 2025 will be held on 14-18 December 2025 in Sirius (Sochi).

The conference program includes a number of invited talks. Participation is free to everyone, however talks are only by invitation. Questions may be addressed to Email: otha.conference@gmail.com .

14 December - arrival; 15, 16 December - working days; 17 December - research discussions and excursion; 18 December - departure

As a satellite session, one more extra day of the workshop will be held at the Southern Federal University in the administrative main building of the Southern Federal University.

OTHA workshops are part of the OTHA conference/workshops/seminars/editorial activities https://otha.sfedu.ru/ , http://msrn.sfedu.ru/

Financial support
Supported by the Regional Mathematical Center, project of the Ministry of Science and Higher Education RF, agreement № 075-02-2025-1720 dated 28.02.2025.