Membership in professional organizations:
- full member of Shevchenko Scientific Society;
- have contacts with Polish, European and American Mathematical Societies;
- member of research community Mathoverflow (#3 in world MO-ranking for 2018 and #20 in 2017 and 2019).
Experience in event organizing:
- co-chairman of the organizing committee of the International conference dedicated to the 70th anniversary of Professor A.M. Plichko «Functional Analysis and its Applications», 2019;
- co-chairman of the organizing committee of Conferences in Functional Analysis and its applications, dedicated to the anniversaries of Stefan Banach,2002, 2012, 2017;
- co-chairman of the organizing committee of Summer Schools in Algebra, Topology and Analysis, 2003-2019.