On invertibility states of differential and difference operators. (English. Russian original) Zbl 1471.47029
Izv. Math. 82, No. 1, 1-13 (2018); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 82, No. 1, 3-16 (2018).
Reviewer: Miklavž Mastinšek (Maribor)