Volume 260, Issue 6

This issue is a translation of Problemy Matematicheskogo Analiza (Problems in Mathematical Analysis), No. 113, 2022. Editorial Board of PMA: N. Uraltseva (Main Editor), A. Arkhipova, N. Ivochkina, A. Laptev, V. Maz’ya, V. Osmolovskii, B. Plamenevskii, G. Rozenblyum, D. Yafaev. Translated into English and edited by Tamara Rozhkovskaya. The issue presents selected materials of the Conference of World-Class International Mathematical Centers held in Sirius Mathematics Center, Sochi on August 9-13, 2021. Invited Editor: D. I. Borisov